diff --git a/c4.c b/c4.c
index 0340255..5112eae 100644
--- a/c4.c
+++ b/c4.c
@@ -11,7 +11,7 @@
 #include <memory.h>
 #include <unistd.h>
 #include <fcntl.h>
-#define int long long
+#define int intptr_t
 
 char *p, *lp, // current position in source code
      *data;   // data/bss pointer