diff --git a/desmume/src/gtk/desmume.c b/desmume/src/gtk/desmume.c
index a230d3c0b..8f22c4fad 100644
--- a/desmume/src/gtk/desmume.c
+++ b/desmume/src/gtk/desmume.c
@@ -26,42 +26,42 @@ BOOL click = FALSE;
 BOOL fini = FALSE;
 unsigned long glock = 0;
 
-void desmume_mem_init();
-
 u8 *desmume_rom_data = NULL;
 u32 desmume_last_cycle;
 
-void desmume_init()
+void desmume_init( int disable_sound)
 {
 	NDS_Init();
-        SPU_ChangeSoundCore(SNDCORE_SDL, 735 * 4);
+        if ( !disable_sound) {
+          SPU_ChangeSoundCore(SNDCORE_SDL, 735 * 4);
+        }
 	execute = FALSE;
 }
 
-void desmume_free()
+void desmume_free( void)
 {
 	execute = FALSE;
 	NDS_DeInit();
 }
 
-void desmume_pause()
+void desmume_pause( void)
 {
 	execute = FALSE;
 }
-void desmume_resume()
+void desmume_resume( void)
 {
 	execute = TRUE;
 }
-void desmume_toggle()
+void desmume_toggle( void)
 {
 	execute = (execute) ? FALSE : TRUE;
 }
-BOOL desmume_running()
+BOOL desmume_running( void)
 {
 	return execute;
 }
 
-void desmume_cycle()
+void desmume_cycle( void)
 {
   u16 keypad;
   /* Joystick events */
diff --git a/desmume/src/gtk/desmume.h b/desmume/src/gtk/desmume.h
index 96518af62..cd5fcca5d 100644
--- a/desmume/src/gtk/desmume.h
+++ b/desmume/src/gtk/desmume.h
@@ -24,15 +24,15 @@
 
 #include "globals.h"
 
-extern void desmume_init();
-extern void desmume_free();
+extern void desmume_init( int disable_sound);
+extern void desmume_free( void);
 
-extern void desmume_pause();
-extern void desmume_resume();
-extern void desmume_toggle();
-extern BOOL desmume_running();
+extern void desmume_pause( void);
+extern void desmume_resume( void);
+extern void desmume_toggle( void);
+extern BOOL desmume_running( void);
 
-extern void desmume_cycle();
+extern void desmume_cycle( void);
 
 #endif /*__DESMUME_H__*/