diff --git a/gui/fittingView.py b/gui/fittingView.py
index a30efe447..460316147 100644
--- a/gui/fittingView.py
+++ b/gui/fittingView.py
@@ -261,3 +261,5 @@ class FittingView(d.Display):
         for i, mod in enumerate(self.mods):
             if slotMap[mod.slot]:
                 self.SetItemBackgroundColour(i, wx.Colour(255, 51, 51))
+            else:
+                self.SetItemBackgroundColour(i, None)