diff --git a/extensions/openpower-pels/pel_values.hpp b/extensions/openpower-pels/pel_values.hpp
index d737267..16556f3 100644
--- a/extensions/openpower-pels/pel_values.hpp
+++ b/extensions/openpower-pels/pel_values.hpp
@@ -2,6 +2,7 @@
 
 #include "pel_types.hpp"
 
+#include <cstdint>
 #include <map>
 #include <string>
 #include <tuple>