diff --git a/intern/guardedalloc/intern/mallocn.c b/intern/guardedalloc/intern/mallocn.c
index bb117756e66..44f7eda5310 100644
--- a/intern/guardedalloc/intern/mallocn.c
+++ b/intern/guardedalloc/intern/mallocn.c
@@ -252,20 +252,15 @@ void *MEM_callocN(unsigned int len, const char *str)
 /* note; mmap returns zero'd memory */
 void *MEM_mapallocN(unsigned int len, const char *str)
 {
-#if defined(AMIGA) || defined(__BeOS) || defined(WIN32)
+#if defined(AMIGA) || defined(__BeOS) || defined(WIN32) || defined(__sgi)
 	return MEM_callocN(len, str);
 #else
 	MemHead *memh;
 	
 	len = (len + 3 ) & ~3; 	/* allocate in units of 4 */
 	
-#if defined(__sgi)
-	memh= mmap(0, len+sizeof(MemHead)+sizeof(MemTail), 
-			   PROT_READ|PROT_WRITE, MAP_SHARED, -1, 0);
-#else
 	memh= mmap(0, len+sizeof(MemHead)+sizeof(MemTail), 
 			   PROT_READ|PROT_WRITE, MAP_SHARED|MAP_ANON, -1, 0);
-#endif
 	
 	if(memh!=(MemHead *)-1) {
 		make_memhead_header(memh, len, str);