diff --git a/source/zone.c b/source/zone.c
index db17355..18dc691 100644
--- a/source/zone.c
+++ b/source/zone.c
@@ -48,6 +48,7 @@ typedef struct
 void Cache_FreeLow (int new_low_hunk);
 void Cache_FreeHigh (int new_high_hunk);
 
+#ifdef PSP_VFPU
 void* memcpy_vfpu( void* dst, void* src, unsigned int size )
 {
 	u8* src8 = (u8*)src;
@@ -381,6 +382,7 @@ bytecopy:
 
 	return (dst);
 }
+#endif //PSP_VFPU
 
 /*
 ===================
diff --git a/source/zone.h b/source/zone.h
index be7e126..d8f7694 100644
--- a/source/zone.h
+++ b/source/zone.h
@@ -135,6 +135,8 @@ void *Cache_Alloc (cache_user_t *c, int size, char *name);
 
 void Cache_Report (void);
 
+#ifdef PSP_VFPU
 void* memcpy_vfpu(void* dst, void* src, unsigned int size);
+#endif // PSP_VFPU
 
 #endif	/* __ZZONE_H */
\ No newline at end of file