diff --git a/openlp/plugins/presentations/lib/impresscontroller.py b/openlp/plugins/presentations/lib/impresscontroller.py
index 4cbadc9dd..c4250f27a 100644
--- a/openlp/plugins/presentations/lib/impresscontroller.py
+++ b/openlp/plugins/presentations/lib/impresscontroller.py
@@ -41,6 +41,7 @@ from openlp.core.lib import resize_image
 
 if os.name == u'nt':
     from win32com.client import Dispatch
+    import pywintypes
 else:
     try:
         import uno