diff --git a/tests/scripts/conf.sh b/tests/scripts/conf.sh
index bc65597eba..afdaa5c693 100755
--- a/tests/scripts/conf.sh
+++ b/tests/scripts/conf.sh
@@ -1,3 +1,3 @@
 #! /bin/sh
 # $OpenLDAP$
-sed -e s/@BACKEND@/$BACKEND/ -e s/^#$BACKEND#//
+sed -e "s/@BACKEND@/$BACKEND/" -e "s/^#$BACKEND#//"