diff --git a/gui/patternEditor.py b/gui/patternEditor.py
index 08eab425c..d68ceb93b 100644
--- a/gui/patternEditor.py
+++ b/gui/patternEditor.py
@@ -296,6 +296,10 @@ class DmgPatternEditorDlg (wx.Dialog):
                 self.stPercentages.SetLabel("Name already used, please pick another")
                 return
 
+        if newName == "":
+            self.stPercentages.SetLabel("Invalid name.")
+            return
+
         cDP = service.DamagePattern.getInstance()
         cDP.renamePattern(p, newName)