diff --git a/src/WeirdState.h b/src/WeirdState.h
index 5b8e90fba6..b34a6da8e8 100644
--- a/src/WeirdState.h
+++ b/src/WeirdState.h
@@ -2,6 +2,7 @@
 
 #pragma once
 
+#include <cstdint>
 #include <string>
 #include <unordered_map>