diff --git a/doc/source/conf.py b/doc/source/conf.py
index 6bc618856a..6841de73c7 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -25,6 +25,7 @@
 # serve to show the default.
 
 import subprocess
+import warnings
 
 # NOTE(dstanek): adds _ to the builtins so keystone modules can be imported
 __builtins__['_'] = str
@@ -156,8 +157,12 @@ html_static_path = ['_static']
 #html_last_updated_fmt = '%b %d, %Y'
 git_cmd = ["git", "log", "--pretty=format:'%ad, commit %h'", "--date=local",
     "-n1"]
-html_last_updated_fmt = subprocess.Popen(
-    git_cmd, stdout=subprocess.PIPE).communicate()[0]
+try:
+    html_last_updated_fmt = subprocess.Popen(
+        git_cmd, stdout=subprocess.PIPE).communicate()[0]
+except Exception:
+    warnings.warn('Cannot get last updated time from git repository. '
+                  'Not setting "html_last_updated_fmt".')
 
 # If true, SmartyPants will be used to convert quotes and dashes to
 # typographically correct entities.