diff --git a/src/gamelog.cpp b/src/gamelog.cpp
--- a/src/gamelog.cpp
+++ b/src/gamelog.cpp
@@ -356,7 +356,7 @@ static int _gamelog_print_level = 0; ///
 
 static void GamelogPrintDebugProc(const char *s)
 {
-	DEBUG(gamelog, _gamelog_print_level, "%s", s);
+	Debug(gamelog, _gamelog_print_level, "{}", s);
 }