diff --git a/include/flatbuffers/hash.h b/include/flatbuffers/hash.h
index 134d1751763aa5d352384c809ab4b5292b1023b8..6c6a3bbca3613cc8c57aa8bc3b6c999951041eb0 100644
--- a/include/flatbuffers/hash.h
+++ b/include/flatbuffers/hash.h
@@ -19,6 +19,7 @@
 
 #include <cstdint>
 #include <cstring>
+#include <stdio.h>
 
 namespace flatbuffers {