diff --git a/gui/builtinViews/fittingView.py b/gui/builtinViews/fittingView.py
index b7a59df55..3a4d2b67c 100644
--- a/gui/builtinViews/fittingView.py
+++ b/gui/builtinViews/fittingView.py
@@ -144,13 +144,14 @@ class FittingView(d.Display):
 
     def OnMouseMove(self, event):
         row, _, col = self.HitTestSubItem(event.Position)
-        if row != -1 and col != -1:
+        if row != -1 and col != -1 and col < len(self.DEFAULT_COLS):
             mod = self.mods[self.GetItemData(row)]
             if self.DEFAULT_COLS[col] == "Miscellanea":
                 tooltip = self.activeColumns[col].getToolTip(mod)
                 self.SetToolTipString(tooltip)
             else:
                 self.SetToolTipString("")
+        event.Skip()
 
     def handleDrag(self, type, fitID):
         if type == "fit":