diff --git a/shash.h b/shash.h
index cf51f79..fad7a37 100644
--- a/shash.h
+++ b/shash.h
@@ -17,6 +17,7 @@
 #include <sys/types.h>
 #include <time.h>
 #include <stdbool.h>
+#include <stdint.h>
 
 
 #define WORD 32