diff --git a/mahotas/morph.py b/mahotas/morph.py
index 074300e6..77bb7fdf 100644
--- a/mahotas/morph.py
+++ b/mahotas/morph.py
@@ -22,7 +22,7 @@
         'hitmiss',
         'locmax',
         'locmin',
-        'majority_filter'
+        'majority_filter',
         'open',
         'regmax',
         'regmin',