diff --git a/scripts/Muon/GUI/Common/message_box.py b/scripts/Muon/GUI/Common/message_box.py
index ecea1a6479924f0097b30b33441e776b526a93b5..d6df08342f8c795216490b3bf57e1b6c99fbc336 100644
--- a/scripts/Muon/GUI/Common/message_box.py
+++ b/scripts/Muon/GUI/Common/message_box.py
@@ -4,4 +4,4 @@ import PyQt4.QtGui as QtGui
 def warning(error):
 
     ex = QtGui.QWidget()
-    QtGui.QMessageBox.warning(ex, "Frequency Domain Analysis", str(error))
+    QtGui.QMessageBox.warning(ex, "Error", str(error))