diff --git a/include/flatbuffers/hash.h b/include/flatbuffers/hash.h
index 134d17517..6c6a3bbca 100644
--- a/include/flatbuffers/hash.h
+++ b/include/flatbuffers/hash.h
@@ -19,6 +19,7 @@
 
 #include <cstdint>
 #include <cstring>
+#include <stdio.h>
 
 namespace flatbuffers {