diff --git a/docs/sphinxext/mantiddoc/directives/properties.py b/docs/sphinxext/mantiddoc/directives/properties.py
index e5d6343db4ebd631e29d3cb16854157fe45b757b..eadfc9f6decae6a9978782cb08a24899ee83d478 100644
--- a/docs/sphinxext/mantiddoc/directives/properties.py
+++ b/docs/sphinxext/mantiddoc/directives/properties.py
@@ -1,5 +1,5 @@
 from mantiddoc.directives.base import AlgorithmBaseDirective
-
+import string
 
 class PropertiesDirective(AlgorithmBaseDirective):