diff --git a/dlls/krnl386.exe16/dosexe.h b/dlls/krnl386.exe16/dosexe.h
index 1e4d15c75e5..f2064c2b758 100644
--- a/dlls/krnl386.exe16/dosexe.h
+++ b/dlls/krnl386.exe16/dosexe.h
@@ -38,8 +38,8 @@
 typedef void (*DOSRELAY)(CONTEXT*,void*);
 typedef void (WINAPI *INTPROC)(CONTEXT*);
 
-extern WORD DOSVM_psp DECLSPEC_HIDDEN;     /* psp of current DOS task */
-extern WORD int16_sel DECLSPEC_HIDDEN;
+extern WORD DOSVM_psp;     /* psp of current DOS task */
+extern WORD int16_sel;
 
 #define ADD_LOWORD(dw,val)  ((dw) = ((dw) & 0xffff0000) | LOWORD((DWORD)(dw)+(val)))
 
@@ -195,53 +195,53 @@ typedef struct
 #include <poppack.h>
 
 /* dosvm.c */
-extern void DOSVM_Exit( WORD retval ) DECLSPEC_HIDDEN;
+extern void DOSVM_Exit( WORD retval );
 
 /* dosmem.c */
-extern BIOSDATA *DOSVM_BiosData( void ) DECLSPEC_HIDDEN;
-extern void DOSVM_start_bios_timer(void) DECLSPEC_HIDDEN;
+extern BIOSDATA *DOSVM_BiosData( void );
+extern void DOSVM_start_bios_timer(void);
 
 /* fpu.c */
-extern void WINAPI DOSVM_Int34Handler(CONTEXT*) DECLSPEC_HIDDEN;
-extern void WINAPI DOSVM_Int35Handler(CONTEXT*) DECLSPEC_HIDDEN;
-extern void WINAPI DOSVM_Int36Handler(CONTEXT*) DECLSPEC_HIDDEN;
-extern void WINAPI DOSVM_Int37Handler(CONTEXT*) DECLSPEC_HIDDEN;
-extern void WINAPI DOSVM_Int38Handler(CONTEXT*) DECLSPEC_HIDDEN;
-extern void WINAPI DOSVM_Int39Handler(CONTEXT*) DECLSPEC_HIDDEN;
-extern void WINAPI DOSVM_Int3aHandler(CONTEXT*) DECLSPEC_HIDDEN;
-extern void WINAPI DOSVM_Int3bHandler(CONTEXT*) DECLSPEC_HIDDEN;
-extern void WINAPI DOSVM_Int3cHandler(CONTEXT*) DECLSPEC_HIDDEN;
-extern void WINAPI DOSVM_Int3dHandler(CONTEXT*) DECLSPEC_HIDDEN;
-extern void WINAPI DOSVM_Int3eHandler(CONTEXT*) DECLSPEC_HIDDEN;
+extern void WINAPI DOSVM_Int34Handler(CONTEXT*);
+extern void WINAPI DOSVM_Int35Handler(CONTEXT*);
+extern void WINAPI DOSVM_Int36Handler(CONTEXT*);
+extern void WINAPI DOSVM_Int37Handler(CONTEXT*);
+extern void WINAPI DOSVM_Int38Handler(CONTEXT*);
+extern void WINAPI DOSVM_Int39Handler(CONTEXT*);
+extern void WINAPI DOSVM_Int3aHandler(CONTEXT*);
+extern void WINAPI DOSVM_Int3bHandler(CONTEXT*);
+extern void WINAPI DOSVM_Int3cHandler(CONTEXT*);
+extern void WINAPI DOSVM_Int3dHandler(CONTEXT*);
+extern void WINAPI DOSVM_Int3eHandler(CONTEXT*);
 
 /* int15.c */
-extern void WINAPI DOSVM_Int15Handler(CONTEXT*) DECLSPEC_HIDDEN;
+extern void WINAPI DOSVM_Int15Handler(CONTEXT*);
 
 /* int21.c */
-extern void WINAPI DOSVM_Int21Handler(CONTEXT*) DECLSPEC_HIDDEN;
+extern void WINAPI DOSVM_Int21Handler(CONTEXT*);
 
 /* int25.c */
-BOOL DOSVM_RawRead( BYTE, DWORD, DWORD, BYTE *, BOOL ) DECLSPEC_HIDDEN;
-void WINAPI DOSVM_Int25Handler( CONTEXT * ) DECLSPEC_HIDDEN;
+BOOL DOSVM_RawRead( BYTE, DWORD, DWORD, BYTE *, BOOL );
+void WINAPI DOSVM_Int25Handler( CONTEXT * );
 
 /* int26.c */
-BOOL DOSVM_RawWrite( BYTE, DWORD, DWORD, BYTE *, BOOL ) DECLSPEC_HIDDEN;
-void WINAPI DOSVM_Int26Handler( CONTEXT * ) DECLSPEC_HIDDEN;
+BOOL DOSVM_RawWrite( BYTE, DWORD, DWORD, BYTE *, BOOL );
+void WINAPI DOSVM_Int26Handler( CONTEXT * );
 
 /* int2f.c */
-extern void WINAPI DOSVM_Int2fHandler(CONTEXT*) DECLSPEC_HIDDEN;
+extern void WINAPI DOSVM_Int2fHandler(CONTEXT*);
 
 /* int31.c */
-extern void WINAPI DOSVM_Int31Handler(CONTEXT*) DECLSPEC_HIDDEN;
+extern void WINAPI DOSVM_Int31Handler(CONTEXT*);
 
 /* interrupts.c */
-extern void WINAPI __wine_call_int_handler16( BYTE, CONTEXT * ) DECLSPEC_HIDDEN;
-extern BOOL        DOSVM_EmulateInterruptPM( CONTEXT *, BYTE ) DECLSPEC_HIDDEN;
-extern FARPROC16   DOSVM_GetPMHandler16( BYTE ) DECLSPEC_HIDDEN;
-extern void        DOSVM_SetPMHandler16( BYTE, FARPROC16 ) DECLSPEC_HIDDEN;
+extern void WINAPI __wine_call_int_handler16( BYTE, CONTEXT * );
+extern BOOL        DOSVM_EmulateInterruptPM( CONTEXT *, BYTE );
+extern FARPROC16   DOSVM_GetPMHandler16( BYTE );
+extern void        DOSVM_SetPMHandler16( BYTE, FARPROC16 );
 
 /* ioports.c */
-extern DWORD DOSVM_inport( int port, int size ) DECLSPEC_HIDDEN;
-extern void DOSVM_outport( int port, int size, DWORD value ) DECLSPEC_HIDDEN;
+extern DWORD DOSVM_inport( int port, int size );
+extern void DOSVM_outport( int port, int size, DWORD value );
 
 #endif /* __WINE_DOSEXE_H */
diff --git a/dlls/krnl386.exe16/kernel16_private.h b/dlls/krnl386.exe16/kernel16_private.h
index 7ce1921e40b..a70dfeeec9f 100644
--- a/dlls/krnl386.exe16/kernel16_private.h
+++ b/dlls/krnl386.exe16/kernel16_private.h
@@ -152,7 +152,7 @@ typedef struct _THHOOK
 extern LONG __wine_call_from_16(void);
 extern void __wine_call_from_16_regs(void);
 
-extern THHOOK *pThhook DECLSPEC_HIDDEN;
+extern THHOOK *pThhook;
 
 #include "poppack.h"
 
@@ -188,45 +188,45 @@ static inline void stack16_pop( int size )
 }
 
 /* dosmem.c */
-extern BOOL   DOSMEM_Init(void) DECLSPEC_HIDDEN;
-extern BOOL   DOSMEM_InitDosMemory(void) DECLSPEC_HIDDEN;
-extern LPVOID DOSMEM_MapRealToLinear(DWORD) DECLSPEC_HIDDEN; /* real-mode to linear */
-extern LPVOID DOSMEM_MapDosToLinear(UINT) DECLSPEC_HIDDEN;   /* linear DOS to Wine */
-extern UINT   DOSMEM_MapLinearToDos(LPVOID) DECLSPEC_HIDDEN; /* linear Wine to DOS */
-extern BOOL   DOSMEM_MapDosLayout(void) DECLSPEC_HIDDEN;
-extern LPVOID DOSMEM_AllocBlock(UINT size, WORD* p) DECLSPEC_HIDDEN;
-extern BOOL   DOSMEM_FreeBlock(void* ptr) DECLSPEC_HIDDEN;
-extern UINT   DOSMEM_ResizeBlock(void* ptr, UINT size, BOOL exact) DECLSPEC_HIDDEN;
-extern UINT   DOSMEM_Available(void) DECLSPEC_HIDDEN;
+extern BOOL   DOSMEM_Init(void);
+extern BOOL   DOSMEM_InitDosMemory(void);
+extern LPVOID DOSMEM_MapRealToLinear(DWORD); /* real-mode to linear */
+extern LPVOID DOSMEM_MapDosToLinear(UINT);   /* linear DOS to Wine */
+extern UINT   DOSMEM_MapLinearToDos(LPVOID); /* linear Wine to DOS */
+extern BOOL   DOSMEM_MapDosLayout(void);
+extern LPVOID DOSMEM_AllocBlock(UINT size, WORD* p);
+extern BOOL   DOSMEM_FreeBlock(void* ptr);
+extern UINT   DOSMEM_ResizeBlock(void* ptr, UINT size, BOOL exact);
+extern UINT   DOSMEM_Available(void);
 
 /* global16.c */
 extern HGLOBAL16 GLOBAL_CreateBlock( UINT16 flags, void *ptr, DWORD size,
-                                     HGLOBAL16 hOwner, unsigned char selflags ) DECLSPEC_HIDDEN;
-extern BOOL16 GLOBAL_FreeBlock( HGLOBAL16 handle ) DECLSPEC_HIDDEN;
-extern BOOL16 GLOBAL_MoveBlock( HGLOBAL16 handle, void *ptr, DWORD size ) DECLSPEC_HIDDEN;
-extern HGLOBAL16 GLOBAL_Alloc( WORD flags, DWORD size, HGLOBAL16 hOwner, unsigned char selflags ) DECLSPEC_HIDDEN;
+                                     HGLOBAL16 hOwner, unsigned char selflags );
+extern BOOL16 GLOBAL_FreeBlock( HGLOBAL16 handle );
+extern BOOL16 GLOBAL_MoveBlock( HGLOBAL16 handle, void *ptr, DWORD size );
+extern HGLOBAL16 GLOBAL_Alloc( WORD flags, DWORD size, HGLOBAL16 hOwner, unsigned char selflags );
 
 /* instr.c */
-extern DWORD __wine_emulate_instruction( EXCEPTION_RECORD *rec, CONTEXT *context ) DECLSPEC_HIDDEN;
-extern LONG CALLBACK INSTR_vectored_handler( EXCEPTION_POINTERS *ptrs ) DECLSPEC_HIDDEN;
+extern DWORD __wine_emulate_instruction( EXCEPTION_RECORD *rec, CONTEXT *context );
+extern LONG CALLBACK INSTR_vectored_handler( EXCEPTION_POINTERS *ptrs );
 
 /* ne_module.c */
-extern NE_MODULE *NE_GetPtr( HMODULE16 hModule ) DECLSPEC_HIDDEN;
-extern WORD NE_GetOrdinal( HMODULE16 hModule, const char *name ) DECLSPEC_HIDDEN;
-extern FARPROC16 WINAPI NE_GetEntryPoint( HMODULE16 hModule, WORD ordinal ) DECLSPEC_HIDDEN;
-extern FARPROC16 NE_GetEntryPointEx( HMODULE16 hModule, WORD ordinal, BOOL16 snoop ) DECLSPEC_HIDDEN;
-extern BOOL16 NE_SetEntryPoint( HMODULE16 hModule, WORD ordinal, WORD offset ) DECLSPEC_HIDDEN;
-extern DWORD NE_StartTask(void) DECLSPEC_HIDDEN;
+extern NE_MODULE *NE_GetPtr( HMODULE16 hModule );
+extern WORD NE_GetOrdinal( HMODULE16 hModule, const char *name );
+extern FARPROC16 WINAPI NE_GetEntryPoint( HMODULE16 hModule, WORD ordinal );
+extern FARPROC16 NE_GetEntryPointEx( HMODULE16 hModule, WORD ordinal, BOOL16 snoop );
+extern BOOL16 NE_SetEntryPoint( HMODULE16 hModule, WORD ordinal, WORD offset );
+extern DWORD NE_StartTask(void);
 
 /* ne_segment.c */
-extern BOOL NE_LoadSegment( NE_MODULE *pModule, WORD segnum ) DECLSPEC_HIDDEN;
-extern BOOL NE_LoadAllSegments( NE_MODULE *pModule ) DECLSPEC_HIDDEN;
-extern BOOL NE_CreateSegment( NE_MODULE *pModule, int segnum ) DECLSPEC_HIDDEN;
-extern BOOL NE_CreateAllSegments( NE_MODULE *pModule ) DECLSPEC_HIDDEN;
-extern HINSTANCE16 NE_GetInstance( NE_MODULE *pModule ) DECLSPEC_HIDDEN;
-extern void NE_InitializeDLLs( HMODULE16 hModule ) DECLSPEC_HIDDEN;
-extern void NE_DllProcessAttach( HMODULE16 hModule ) DECLSPEC_HIDDEN;
-extern void NE_CallUserSignalProc( HMODULE16 hModule, UINT16 code ) DECLSPEC_HIDDEN;
+extern BOOL NE_LoadSegment( NE_MODULE *pModule, WORD segnum );
+extern BOOL NE_LoadAllSegments( NE_MODULE *pModule );
+extern BOOL NE_CreateSegment( NE_MODULE *pModule, int segnum );
+extern BOOL NE_CreateAllSegments( NE_MODULE *pModule );
+extern HINSTANCE16 NE_GetInstance( NE_MODULE *pModule );
+extern void NE_InitializeDLLs( HMODULE16 hModule );
+extern void NE_DllProcessAttach( HMODULE16 hModule );
+extern void NE_CallUserSignalProc( HMODULE16 hModule, UINT16 code );
 
 /* selector.c */
 #define LDT_SIZE 8192
@@ -236,7 +236,7 @@ struct ldt_copy
     unsigned int  limit[LDT_SIZE];
     unsigned char flags[LDT_SIZE];
 };
-extern const struct ldt_copy *ldt_copy DECLSPEC_HIDDEN;
+extern const struct ldt_copy *ldt_copy;
 
 #define LDT_FLAGS_DATA      0x13  /* Data segment */
 #define LDT_FLAGS_CODE      0x1b  /* Code segment */
@@ -246,15 +246,15 @@ static inline void *ldt_get_base( WORD sel ) { return ldt_copy->base[sel >> 3];
 static inline unsigned int ldt_get_limit( WORD sel ) { return ldt_copy->limit[sel >> 3]; }
 static inline unsigned char ldt_get_flags( WORD sel ) { return ldt_copy->flags[sel >> 3]; }
 
-extern void init_selectors(void) DECLSPEC_HIDDEN;
-extern BOOL ldt_is_system( WORD sel ) DECLSPEC_HIDDEN;
-extern BOOL ldt_is_valid( WORD sel ) DECLSPEC_HIDDEN;
-extern void *ldt_get_ptr( WORD sel, DWORD offset ) DECLSPEC_HIDDEN;
-extern BOOL ldt_get_entry( WORD sel, LDT_ENTRY *entry ) DECLSPEC_HIDDEN;
-extern void ldt_set_entry( WORD sel, LDT_ENTRY entry ) DECLSPEC_HIDDEN;
-extern WORD SELECTOR_AllocBlock( const void *base, DWORD size, unsigned char flags ) DECLSPEC_HIDDEN;
-extern WORD SELECTOR_ReallocBlock( WORD sel, const void *base, DWORD size ) DECLSPEC_HIDDEN;
-extern void SELECTOR_FreeBlock( WORD sel ) DECLSPEC_HIDDEN;
+extern void init_selectors(void);
+extern BOOL ldt_is_system( WORD sel );
+extern BOOL ldt_is_valid( WORD sel );
+extern void *ldt_get_ptr( WORD sel, DWORD offset );
+extern BOOL ldt_get_entry( WORD sel, LDT_ENTRY *entry );
+extern void ldt_set_entry( WORD sel, LDT_ENTRY entry );
+extern WORD SELECTOR_AllocBlock( const void *base, DWORD size, unsigned char flags );
+extern WORD SELECTOR_ReallocBlock( WORD sel, const void *base, DWORD size );
+extern void SELECTOR_FreeBlock( WORD sel );
 #define IS_SELECTOR_32BIT(sel) \
    (ldt_is_system(sel) || (ldt_copy->flags[LOWORD(sel) >> 3] & LDT_FLAGS_32BIT))
 
@@ -264,36 +264,36 @@ static inline WORD get_fs(void) { WORD res; __asm__( "movw %%fs,%0" : "=r" (res)
 static inline WORD get_gs(void) { WORD res; __asm__( "movw %%gs,%0" : "=r" (res) ); return res; }
 
 /* relay16.c */
-extern int relay_call_from_16( void *entry_point, unsigned char *args16, CONTEXT *context ) DECLSPEC_HIDDEN;
-extern void RELAY16_InitDebugLists(void) DECLSPEC_HIDDEN;
+extern int relay_call_from_16( void *entry_point, unsigned char *args16, CONTEXT *context );
+extern void RELAY16_InitDebugLists(void);
 
 /* snoop16.c */
-extern void SNOOP16_RegisterDLL(HMODULE16,LPCSTR) DECLSPEC_HIDDEN;
-extern FARPROC16 SNOOP16_GetProcAddress16(HMODULE16,DWORD,FARPROC16) DECLSPEC_HIDDEN;
-extern BOOL SNOOP16_ShowDebugmsgSnoop(const char *dll,int ord,const char *fname) DECLSPEC_HIDDEN;
+extern void SNOOP16_RegisterDLL(HMODULE16,LPCSTR);
+extern FARPROC16 SNOOP16_GetProcAddress16(HMODULE16,DWORD,FARPROC16);
+extern BOOL SNOOP16_ShowDebugmsgSnoop(const char *dll,int ord,const char *fname);
 
 /* syslevel.c */
-extern VOID SYSLEVEL_CheckNotLevel( INT level ) DECLSPEC_HIDDEN;
+extern VOID SYSLEVEL_CheckNotLevel( INT level );
 
 /* task.c */
-extern void TASK_CreateMainTask(void) DECLSPEC_HIDDEN;
+extern void TASK_CreateMainTask(void);
 extern HTASK16 TASK_SpawnTask( NE_MODULE *pModule, WORD cmdShow,
-                               LPCSTR cmdline, BYTE len, HANDLE *hThread ) DECLSPEC_HIDDEN;
-extern void TASK_ExitTask(void) DECLSPEC_HIDDEN;
-extern HTASK16 TASK_GetTaskFromThread( DWORD thread ) DECLSPEC_HIDDEN;
-extern TDB *TASK_GetCurrent(void) DECLSPEC_HIDDEN;
-extern void TASK_InstallTHHook( THHOOK *pNewThook ) DECLSPEC_HIDDEN;
+                               LPCSTR cmdline, BYTE len, HANDLE *hThread );
+extern void TASK_ExitTask(void);
+extern HTASK16 TASK_GetTaskFromThread( DWORD thread );
+extern TDB *TASK_GetCurrent(void);
+extern void TASK_InstallTHHook( THHOOK *pNewThook );
 
-extern BOOL WOWTHUNK_Init(void) DECLSPEC_HIDDEN;
+extern BOOL WOWTHUNK_Init(void);
 
-extern WORD DOSMEM_0000H DECLSPEC_HIDDEN;
-extern WORD DOSMEM_BiosDataSeg DECLSPEC_HIDDEN;
-extern WORD DOSMEM_BiosSysSeg DECLSPEC_HIDDEN;
-extern DWORD CallTo16_DataSelector DECLSPEC_HIDDEN;
-extern DWORD CallTo16_TebSelector DECLSPEC_HIDDEN;
+extern WORD DOSMEM_0000H;
+extern WORD DOSMEM_BiosDataSeg;
+extern WORD DOSMEM_BiosSysSeg;
+extern DWORD CallTo16_DataSelector;
+extern DWORD CallTo16_TebSelector;
 
-extern WORD cbclient_selector DECLSPEC_HIDDEN;
-extern WORD cbclientex_selector DECLSPEC_HIDDEN;
+extern WORD cbclient_selector;
+extern WORD cbclientex_selector;
 
 struct tagSYSLEVEL;
 
diff --git a/dlls/krnl386.exe16/thunk.c b/dlls/krnl386.exe16/thunk.c
index 27fc14b5810..696f3e89aa1 100644
--- a/dlls/krnl386.exe16/thunk.c
+++ b/dlls/krnl386.exe16/thunk.c
@@ -2234,7 +2234,7 @@ LPVOID WINAPI GetPK16SysVar(void)
 /**********************************************************************
  *           CommonUnimpStub    (KERNEL32.17)
  */
-int WINAPI DECLSPEC_HIDDEN __regs_CommonUnimpStub( const char *name, int type )
+int WINAPI __regs_CommonUnimpStub( const char *name, int type )
 {
     FIXME("generic stub %s\n", debugstr_a(name));
 
diff --git a/dlls/krnl386.exe16/vxd.c b/dlls/krnl386.exe16/vxd.c
index 9ac1ea0bbb5..599ebb32edb 100644
--- a/dlls/krnl386.exe16/vxd.c
+++ b/dlls/krnl386.exe16/vxd.c
@@ -233,7 +233,7 @@ done:
  *		VxDCall7 (KERNEL32.8)
  *		VxDCall8 (KERNEL32.9)
  */
-void WINAPI DECLSPEC_HIDDEN __regs_VxDCall( CONTEXT *context )
+void WINAPI __regs_VxDCall( CONTEXT *context )
 {
     unsigned int i;
     VxDCallProc proc = NULL;