diff --git a/desmume/src/GPU.cpp b/desmume/src/GPU.cpp
index ede070acb..07a8724b1 100644
--- a/desmume/src/GPU.cpp
+++ b/desmume/src/GPU.cpp
@@ -1849,7 +1849,7 @@ void GPU::_spriteRender(u8 * dst, u8 * dst_alpha, u8 * typeTab, u8 * prioTab)
 //			SCREEN FUNCTIONS
 /*****************************************************************************/
 
-int Screen_Init(int coreid)
+int Screen_Init()
 {
 	MainScreen.gpu = GPU_Init(0);
 	SubScreen.gpu = GPU_Init(1);
diff --git a/desmume/src/GPU.h b/desmume/src/GPU.h
index d4924aa28..cdd338573 100644
--- a/desmume/src/GPU.h
+++ b/desmume/src/GPU.h
@@ -842,7 +842,7 @@ typedef struct {
 extern NDS_Screen MainScreen;
 extern NDS_Screen SubScreen;
 
-int Screen_Init(int coreid);
+int Screen_Init();
 void Screen_Reset(void);
 void Screen_DeInit(void);
 
diff --git a/desmume/src/NDSSystem.cpp b/desmume/src/NDSSystem.cpp
index 28e27252e..d84461eee 100644
--- a/desmume/src/NDSSystem.cpp
+++ b/desmume/src/NDSSystem.cpp
@@ -114,7 +114,7 @@ int NDS_Init( void) {
 	//got to print this somewhere..
 	printf("%s\n", EMU_DESMUME_NAME_AND_VERSION());
 
-	if (Screen_Init(GFXCORE_DUMMY) != 0)
+	if (Screen_Init() != 0)
 		return -1;
 
 	gfx3d_init();