diff --git a/functions b/functions
index 7317805..446a1d7 100755
--- a/functions
+++ b/functions
@@ -305,8 +305,8 @@ service_url() {
   echo "$PLUGIN_SCHEME://mysql:$PASSWORD@$SERVICE_ALIAS:${PLUGIN_DATASTORE_PORTS[0]}/$SERVICE"
 }
 
-is_container_status () {
-  local CID=$1
+is_container_status() {
+  local CID="$1"
   local TEMPLATE="{{.State.$2}}"
   local CONTAINER_STATUS=$(docker inspect -f "$TEMPLATE" "$CID" || true)
 
@@ -383,7 +383,7 @@ service_linked_apps() {
 }
 
 update_plugin_scheme_for_app() {
-  local APP=$1
+  local APP="$1"
   local MYSQL_DATABASE_SCHEME=$(config_get "$APP" MYSQL_DATABASE_SCHEME)
   PLUGIN_SCHEME=${MYSQL_DATABASE_SCHEME:-$PLUGIN_SCHEME}
 }