diff --git a/Documentation/sphinx/cdomain.py b/Documentation/sphinx/cdomain.py
index df0419c..cf13ff3 100644
--- a/Documentation/sphinx/cdomain.py
+++ b/Documentation/sphinx/cdomain.py
@@ -44,7 +44,7 @@
 __version__  = '1.0'
 
 # Get Sphinx version
-major, minor, patch = map(int, sphinx.__version__.split("."))
+major, minor, patch = sphinx.version_info[:3]
 
 def setup(app):