diff --git a/Common/Hashmaps.h b/Common/Hashmaps.h
index f0a6fe4709..e5e36be02e 100644
--- a/Common/Hashmaps.h
+++ b/Common/Hashmaps.h
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <cstdint> /* uint32_t */
 #include <cstring>
 #include <vector>