diff --git a/src/emucore/TIASnd.hxx b/src/emucore/TIASnd.hxx
index 8ed92ab0b..ce728ea30 100644
--- a/src/emucore/TIASnd.hxx
+++ b/src/emucore/TIASnd.hxx
@@ -18,6 +18,7 @@
 
 #ifndef TIASOUND_HXX
 #define TIASOUND_HXX
+#include <cstdint>
 
 namespace ale {
 namespace stella {