diff --git a/modules/openstack_project/files/git/commit-filter.sh b/modules/openstack_project/files/git/commit-filter.sh
index 1654f24dbf..936ad68796 100644
--- a/modules/openstack_project/files/git/commit-filter.sh
+++ b/modules/openstack_project/files/git/commit-filter.sh
@@ -1,7 +1,7 @@
#!/bin/sh
sed -re '
-s`(I[0-9a-f]{8,40})`\0`g
+s`(I[0-9a-f]{8,40})`\0`g
s`\b([0-9a-fA-F]{8,40})\b`\0`g
s`(\b[Bb]ug\b|\b[Ll][Pp]\b)[ \t#:]*([0-9]+)`\0`g
s`(\b[Ss]tory\b)[ \t#:]*([0-9]+)`\0`g