diff --git a/certbot-apache/certbot_apache/configurator.py b/certbot-apache/certbot_apache/configurator.py
index a2a4182db..b4ce29d31 100644
--- a/certbot-apache/certbot_apache/configurator.py
+++ b/certbot-apache/certbot_apache/configurator.py
@@ -1006,6 +1006,7 @@ class ApacheConfigurator(augeas_configurator.AugeasConfigurator):
         fp = fp.replace("(", "\\(")
         fp = fp.replace(")", "\\)")
         fp = fp.replace("!", "\\!")
+        return fp
 
     ######################################################################
     # Enhancements