diff --git a/arch/sandbox/include/asm/types.h b/arch/sandbox/include/asm/types.h
index 2804667..7b356a9 100644
--- a/arch/sandbox/include/asm/types.h
+++ b/arch/sandbox/include/asm/types.h
@@ -1,15 +1,6 @@
-#ifndef __ASM_I386_TYPES_H
-#define __ASM_I386_TYPES_H
+#ifndef __ASM_SANDBOX_TYPES_H
+#define __ASM_SANDBOX_TYPES_H
 
 #include <asm-generic/int-ll64.h>
 
-#ifdef __x86_64__
-/*
- * This is used in dlmalloc. On X86_64 we need it to be
- * 64 bit
- */
-#define INTERNAL_SIZE_T unsigned long
-
-#endif
-
 #endif