diff --git a/dlls/krnl386.exe16/dosexe.h b/dlls/krnl386.exe16/dosexe.h
index 4a59cdf6c05..dfeae8a78ec 100644
--- a/dlls/krnl386.exe16/dosexe.h
+++ b/dlls/krnl386.exe16/dosexe.h
@@ -272,7 +272,6 @@ extern void EMS_Ioctl_Handler(CONTEXT*) DECLSPEC_HIDDEN;
 
 /* interrupts.c */
 extern void        __wine_call_int_handler( CONTEXT *, BYTE ) DECLSPEC_HIDDEN;
-extern void        DOSVM_CallBuiltinHandler( CONTEXT *, BYTE ) 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;
diff --git a/dlls/krnl386.exe16/interrupts.c b/dlls/krnl386.exe16/interrupts.c
index 70690f600e6..e1b01b7b3d2 100644
--- a/dlls/krnl386.exe16/interrupts.c
+++ b/dlls/krnl386.exe16/interrupts.c
@@ -185,7 +185,7 @@ static void DOSVM_PushFlags( CONTEXT *context, BOOL islong, BOOL isstub )
  * Pushes interrupt frame to stack and changes instruction
  * pointer to interrupt handler.
  */
-void DOSVM_HardwareInterruptPM( CONTEXT *context, BYTE intnum )
+static void DOSVM_HardwareInterruptPM( CONTEXT *context, BYTE intnum )
 {
     FARPROC16 addr = DOSVM_GetPMHandler16( intnum );
 
@@ -386,7 +386,7 @@ void DOSVM_SetPMHandler16( BYTE intnum, FARPROC16 handler )
  *
  * Execute Wine interrupt handler procedure.
  */
-void DOSVM_CallBuiltinHandler( CONTEXT *context, BYTE intnum )
+static void DOSVM_CallBuiltinHandler( CONTEXT *context, BYTE intnum )
 {
     /*
      * FIXME: Make all builtin interrupt calls go via this routine.