diff --git a/anki/latex.py b/anki/latex.py
index c30eef47b..a7feadb0c 100644
--- a/anki/latex.py
+++ b/anki/latex.py
@@ -8,7 +8,7 @@ Latex support
 """
 __docformat__ = 'restructuredtext'
 
-import re, tempfile, os, sys, shutil, cgi
+import re, tempfile, os, sys, shutil, cgi, subprocess
 from anki.utils import genID, checksum, call
 from anki.hooks import addHook
 from htmlentitydefs import entitydefs