diff --git a/safecpy.c b/safecpy.c
index a751349..0f1f4d5 100644
--- a/safecpy.c
+++ b/safecpy.c
@@ -1,3 +1,5 @@
+#include <stdlib.h>
+#include <string.h>
 #include <stdio.h>
 
 void