diff -r 933fbe9a5e2c -r 866fb3ab8778 graphics/SFC_Objects.py
--- a/graphics/SFC_Objects.py	Fri Oct 13 13:17:42 2017 +0300
+++ b/graphics/SFC_Objects.py	Mon Oct 16 17:20:31 2017 +0300
@@ -972,7 +972,7 @@
         else:
             highlight_items = self.Highlights.items()
             for name, highlights in highlight_items:
-                highlights = ClearHighlights(highlight, highlight_type)
+                highlights = ClearHighlights(highlights, highlight_type)
                 if len(highlights) == 0:
                     self.Highlights.pop(name)