diff --git a/dlls/krnl386.exe16/int10.c b/dlls/krnl386.exe16/int10.c
index 0edfbd7668d..dfba761d431 100644
--- a/dlls/krnl386.exe16/int10.c
+++ b/dlls/krnl386.exe16/int10.c
@@ -1123,7 +1123,7 @@ void WINAPI DOSVM_Int10Handler( CONTEXT *context )
        break;
 
     case 0x0b:
-        switch BH_reg(context) {
+        switch (BH_reg(context)) {
         case 0x00: /* SET BACKGROUND/BORDER COLOR */
             /* In text modes, this sets only the border... */
             /* According to the interrupt list and one of my books. */
@@ -1192,7 +1192,7 @@ void WINAPI DOSVM_Int10Handler( CONTEXT *context )
         break;
 
     case 0x10:
-        switch AL_reg(context) {
+        switch (AL_reg(context)) {
         case 0x00: /* SET SINGLE PALETTE REGISTER - A.C. */
             TRACE("Set Single Palette Register - Reg 0x0%x Value 0x0%x\n",
 		BL_reg(context),BH_reg(context));
@@ -1291,7 +1291,7 @@ void WINAPI DOSVM_Int10Handler( CONTEXT *context )
     case 0x11: /* TEXT MODE CHARGEN */
         /* Note that second subfunction is *almost* identical. */
         /* See INTERRUPT.A for details. */
-        switch AL_reg(context) {
+        switch (AL_reg(context)) {
         case 0x00: /* LOAD USER SPECIFIED PATTERNS */
         case 0x10:
             FIXME("Load User Specified Patterns - Not Supported\n");
@@ -1339,7 +1339,7 @@ void WINAPI DOSVM_Int10Handler( CONTEXT *context )
         break;
 
     case 0x12: /* ALTERNATE FUNCTION SELECT */
-        switch BL_reg(context) {
+        switch (BL_reg(context)) {
         case 0x10: /* GET EGA INFO */
             TRACE("EGA info requested\n");
             SET_BH( context, 0x00 );   /* Color screen */
@@ -1385,7 +1385,7 @@ void WINAPI DOSVM_Int10Handler( CONTEXT *context )
         break;
 
     case 0x1a:
-        switch AL_reg(context) {
+        switch (AL_reg(context)) {
         case 0x00: /* GET DISPLAY COMBINATION CODE */
             TRACE("Get Display Combination Code\n");
             SET_AL( context, 0x1a );      /* Function supported */
diff --git a/dlls/krnl386.exe16/int16.c b/dlls/krnl386.exe16/int16.c
index 47e9d8ee597..f567ee7bb8f 100644
--- a/dlls/krnl386.exe16/int16.c
+++ b/dlls/krnl386.exe16/int16.c
@@ -52,7 +52,7 @@ void WINAPI DOSVM_Int16Handler( CONTEXT *context )
    BIOSDATA *data = NULL;
    BYTE ascii, scan;
 
-   switch AH_reg(context) {
+   switch (AH_reg(context)) {
 
    case 0x00: /* Get Keystroke */
       /* Returns: AH = Scan code
diff --git a/dlls/krnl386.exe16/int67.c b/dlls/krnl386.exe16/int67.c
index 3137bc929e3..019d37956b8 100644
--- a/dlls/krnl386.exe16/int67.c
+++ b/dlls/krnl386.exe16/int67.c
@@ -149,7 +149,7 @@ static void EMS_access_name( CONTEXT *context )
     return;
   }
 
-  switch AL_reg(context) {
+  switch (AL_reg(context)) {
   case 0x00: /* get name */
     ptr = PTR_REAL_TO_LIN(context->SegEs, DI_reg(context));
     memcpy(ptr, EMS_record->handle[hindex].name, 8);
@@ -326,7 +326,7 @@ static void EMS_restore_context( CONTEXT *context )
  */
 void WINAPI DOSVM_Int67Handler( CONTEXT *context )
 {
-  switch AH_reg(context) {
+  switch (AH_reg(context)) {
 
   case 0x40: /* EMS - GET MANAGER STATUS */
     SET_AH( context, 0 ); /* status: ok */
@@ -465,7 +465,7 @@ void EMS_Ioctl_Handler( CONTEXT *context )
 {
   assert(AH_reg(context) == 0x44);
 
-  switch AL_reg(context) {
+  switch (AL_reg(context)) {
   case 0x00: /* IOCTL - GET DEVICE INFORMATION */
       RESET_CFLAG(context); /* operation was successful */
       SET_DX( context, 0x4080 ); /* bit 14 (support ioctl read) and