diff --git a/debian/upstream-config-file-check.sh b/debian/upstream-config-file-check.sh
index 6d4e05626d..f51ac072f7 100644
--- a/debian/upstream-config-file-check.sh
+++ b/debian/upstream-config-file-check.sh
@@ -1,3 +1,4 @@
+set -e
 export LC_ALL=C.UTF-8
 find config | sort > debian/upstream-config-file-list.new
 if ! diff -u debian/upstream-config-file-list debian/upstream-config-file-list.new
@@ -5,7 +6,7 @@ then
   echo "---------------------\n"
   echo "Obsolete config files are:"
   echo "---------------------"
-  comm -13 debian/upstream-file-list.new debian/upstream-file-list
+  comm -13 debian/upstream-config-file-list.new debian/upstream-config-file-list
   echo "---------------------\n"
   echo "These should be added to debian/maintscript"
   echo "---------------------"