diff --git a/src/maploader/udmf.cpp b/src/maploader/udmf.cpp
index a1caea6598..8226f525d9 100644
--- a/src/maploader/udmf.cpp
+++ b/src/maploader/udmf.cpp
@@ -252,7 +252,7 @@ double UDMFParserBase::CheckCoordinate(const char *key)
 	}
 	if (sc.Float < -32768 || sc.Float > 32768)
 	{
-		sc.ScriptMessage("Value %f out of range for a coordinate '%s'. Valid range is ]-32768 .. 32768]", sc.Float, key);
+		sc.ScriptMessage("Value %f out of range for a coordinate '%s'. Valid range is [-32768 .. 32768]", sc.Float, key);
 		BadCoordinates = true;	// If this happens the map must not allowed to be started.
 	}
 	return sc.Float;