diff --git a/libpsx/src/setup.c b/libpsx/src/setup.c
index 1a28685..2c7790d 100644
--- a/libpsx/src/setup.c
+++ b/libpsx/src/setup.c
@@ -1,5 +1,7 @@
 #include <psx.h>
 #include <stdio.h>
+#include <stddef.h>
+#include <string.h>
 
 extern int __bss_start[];
 extern int __bss_end[];
@@ -26,15 +28,14 @@ static void call_ctors(void)
 
 void psxsdk_setup()
 {
-	unsigned int x;
+
 
 	printf("Initializing PSXSDK... \n");
 
 	dprintf("Clearing BSS space...\n");
-	
-// Clear BSS space	
-	for(x = (unsigned int)__bss_start; x < (unsigned int)__bss_end; x++)
-		*((unsigned char*)x) = 0;
+
+// Clear BSS space
+	memset(__bss_start, 0, (ptrdiff_t)__bss_end - (ptrdiff_t)__bss_start);
 
 	dprintf("BSS space cleared.\n");