diff --git a/convertvec.c b/convertvec.c
index 9496684..5860608 100644
--- a/convertvec.c
+++ b/convertvec.c
@@ -4,9 +4,12 @@
 #include <stdio.h>
 #include <string.h>
 #include <math.h>
-#include <malloc.h>
 #include <stdlib.h>
 
+#ifndef __APPLE__ 
+#include <malloc.h>
+#endif
+
 const long long max_w = 2000;
 
 // Convert from text format to binary