diff --git a/common/src/hash/headers/Sha1.h b/common/src/hash/headers/Sha1.h
index 65352e66fd9..34019dfe62f 100644
--- a/common/src/hash/headers/Sha1.h
+++ b/common/src/hash/headers/Sha1.h
@@ -1,5 +1,8 @@
 #ifndef RUNTIME_SHA1_H
 #define RUNTIME_SHA1_H
+
+#include <stdint.h>
+
 /*
 SHA-1 in C
 By Steve Reid <steve@edmweb.com>