diff --git a/letsencrypt-apache/letsencrypt_apache/parser.py b/letsencrypt-apache/letsencrypt_apache/parser.py
index 5c18208bb..ec5211ae4 100644
--- a/letsencrypt-apache/letsencrypt_apache/parser.py
+++ b/letsencrypt-apache/letsencrypt_apache/parser.py
@@ -101,8 +101,7 @@ class ApacheParser(object):
         try:
             matches.remove("DUMP_RUN_CFG")
         except ValueError:
-            return
-            #raise errors.PluginError("Unable to parse runtime variables")
+            raise errors.PluginError("Unable to parse runtime variables")
 
         for match in matches:
             if match.count("=") > 1: