diff --git a/common-functions b/common-functions
index c0b316c..70d834c 100755
--- a/common-functions
+++ b/common-functions
@@ -782,7 +782,7 @@ service_unlink() {
   fi
 
   [[ -z ${LINK[*]} ]] && dokku_log_fail "Not linked to app $APP"
-  config_unset "$APP" "${LINK[*]}"
+  config_unset "$APP" "${LINK[@]}"
 }
 
 service_version() {