diff --git a/lib/utils/mu-error.hh b/lib/utils/mu-error.hh
index 55a8002c..6472ce83 100644
--- a/lib/utils/mu-error.hh
+++ b/lib/utils/mu-error.hh
@@ -22,6 +22,7 @@
 
 #include <stdexcept>
 #include <string>
+#include <cstdint>
 
 #include "mu-utils-format.hh"
 #include <glib.h>