diff --git a/include/mscoree.idl b/include/mscoree.idl
index d7e3227e6c7..8d3f4d35e52 100644
--- a/include/mscoree.idl
+++ b/include/mscoree.idl
@@ -27,7 +27,7 @@ cpp_quote("HRESULT     WINAPI GetCORSystemDirectory(LPWSTR,DWORD,DWORD*);")
 cpp_quote("HRESULT     WINAPI GetCORVersion(LPWSTR,DWORD,DWORD*);")
 cpp_quote("HRESULT     WINAPI GetRequestedRuntimeInfo(LPCWSTR,LPCWSTR,LPCWSTR,DWORD,DWORD,LPWSTR,DWORD,DWORD*,LPWSTR,DWORD,DWORD*);")
 cpp_quote("HRESULT     WINAPI LoadLibraryShim(LPCWSTR,LPCWSTR,LPVOID,HMODULE*);")
-cpp_quote("#ifdef WINE_STRICT_PROTOTYPES")
+cpp_quote("#ifndef WINE_NO_STRICT_PROTOTYPES")
 cpp_quote("typedef HRESULT (__stdcall *FLockClrVersionCallback)(void);")
 cpp_quote("#else")
 cpp_quote("typedef HRESULT (__stdcall *FLockClrVersionCallback)();")
diff --git a/include/rpcndr.h b/include/rpcndr.h
index 4e2a4e1ddb6..75f93b48771 100644
--- a/include/rpcndr.h
+++ b/include/rpcndr.h
@@ -356,7 +356,7 @@ typedef struct _MIDL_SYNTAX_INFO
 
 typedef void (__RPC_API *STUB_THUNK)( PMIDL_STUB_MESSAGE );
 
-#ifdef WINE_STRICT_PROTOTYPES
+#ifndef WINE_NO_STRICT_PROTOTYPES
 typedef LONG (__RPC_API *SERVER_ROUTINE)(void);
 #else
 typedef LONG (__RPC_API *SERVER_ROUTINE)();
diff --git a/include/vfw.h b/include/vfw.h
index cec5345b01e..762e6af8c1a 100644
--- a/include/vfw.h
+++ b/include/vfw.h
@@ -499,7 +499,7 @@ BOOL    VFWAPI  ICInstall(DWORD fccType, DWORD fccHandler, LPARAM lParam, LPSTR
 BOOL    VFWAPI  ICRemove(DWORD fccType, DWORD fccHandler, UINT wFlags);
 LRESULT	VFWAPI	ICGetInfo(HIC hic,ICINFO *picinfo, DWORD cb);
 HIC	VFWAPI	ICOpen(DWORD fccType, DWORD fccHandler, UINT wMode);
-#ifdef WINE_STRICT_PROTOTYPES
+#ifndef WINE_NO_STRICT_PROTOTYPES
 HIC	VFWAPI	ICOpenFunction(DWORD fccType, DWORD fccHandler, UINT wMode, DRIVERPROC lpfnHandler);
 #else
 HIC	VFWAPI	ICOpenFunction(DWORD fccType, DWORD fccHandler, UINT wMode, FARPROC lpfnHandler);
diff --git a/include/wincrypt.h b/include/wincrypt.h
index 0da94a31f73..c0e95f636ff 100644
--- a/include/wincrypt.h
+++ b/include/wincrypt.h
@@ -793,7 +793,7 @@ typedef struct _CRYPT_SMIME_CAPABILITIES {
 
 typedef struct _VTableProvStruc {
     DWORD    Version;
-#ifdef WINE_STRICT_PROTOTYPES
+#ifndef WINE_NO_STRICT_PROTOTYPES
     BOOL     (WINAPI *FuncVerifyImage)(LPCSTR,BYTE*);
     void     (WINAPI *FuncReturnhWnd)(HWND*);
 #else
diff --git a/include/windef.h b/include/windef.h
index 78e4f56052c..79a96791151 100644
--- a/include/windef.h
+++ b/include/windef.h
@@ -248,7 +248,6 @@ typedef unsigned int    DWORD,      *PDWORD,   *LPDWORD;
 
 #ifdef __WINESRC__
 #define WINE_NO_UNICODE_MACROS 1
-#define WINE_STRICT_PROTOTYPES 1
 #endif
 
 #ifdef WINE_NO_UNICODE_MACROS
@@ -326,7 +325,7 @@ typedef HICON HCURSOR;
 
 /* Callback function pointers types */
 
-#ifdef WINE_STRICT_PROTOTYPES
+#ifndef WINE_NO_STRICT_PROTOTYPES
 typedef INT_PTR (CALLBACK *FARPROC)(void);
 typedef INT_PTR (CALLBACK *NEARPROC)(void);
 typedef INT_PTR (CALLBACK *PROC)(void);
diff --git a/include/wine/glu.h b/include/wine/glu.h
index cb8b0934584..c5e2ef101cb 100644
--- a/include/wine/glu.h
+++ b/include/wine/glu.h
@@ -92,7 +92,7 @@ void APIENTRY gluLoadSamplingMatrices(GLUnurbs *nobj,const GLfloat modelMatrix[1
 void APIENTRY gluNurbsProperty(GLUnurbs *nobj,GLenum property,GLfloat value);
 void APIENTRY gluGetNurbsProperty(GLUnurbs *nobj,GLenum property,GLfloat *value);
 
-#ifdef WINE_STRICT_PROTOTYPES
+#ifndef WINE_NO_STRICT_PROTOTYPES
 void APIENTRY gluQuadricCallback(GLUquadric *qobj,GLenum which,void (CALLBACK *fn)(void));
 void APIENTRY gluTessCallback(GLUtesselator *tess,GLenum which,void (CALLBACK *fn)(void));
 void APIENTRY gluNurbsCallback(GLUnurbs *nobj,GLenum which,void (CALLBACK *fn)(void));
diff --git a/include/wine/windef16.h b/include/wine/windef16.h
index 40d96ee5706..2d6536fd46e 100644
--- a/include/wine/windef16.h
+++ b/include/wine/windef16.h
@@ -157,13 +157,7 @@ typedef BOOL16  (CALLBACK *PROPENUMPROC16)(HWND16,SEGPTR,HANDLE16);
 typedef VOID    (CALLBACK *TIMERPROC16)(HWND16,UINT16,UINT16,DWORD);
 typedef LRESULT (CALLBACK *WNDENUMPROC16)(HWND16,LPARAM);
 typedef LRESULT (CALLBACK *WNDPROC16)(HWND16,UINT16,WPARAM16,LPARAM);
-
-#ifdef WINE_STRICT_PROTOTYPES
 typedef LRESULT (CALLBACK *FARPROC16)(void);
 typedef INT16   (CALLBACK *PROC16)(void);
-#else
-typedef LRESULT (CALLBACK *FARPROC16)();
-typedef INT16   (CALLBACK *PROC16)();
-#endif
 
 #endif /* __WINE_WINDEF16_H */