diff --git a/ports/unix/include/arch/cc.h b/ports/unix/include/arch/cc.h
index f2214a5..1709aaa 100644
--- a/ports/unix/include/arch/cc.h
+++ b/ports/unix/include/arch/cc.h
@@ -35,6 +35,7 @@
 /* Include some files for defining library routines */
 #include <string.h>
 #include <sys/time.h>
+#include <limits.h>
 
 /* Define platform endianness */
 #ifndef BYTE_ORDER