diff --git a/commands b/commands
index 670e732..f9bf4bb 100755
--- a/commands
+++ b/commands
@@ -46,7 +46,7 @@ case "$1" in
     [[ -z $2 ]] && dokku_log_fail "Please specify a name for the service"
     verify_service_name "$2"
     SERVICE="$2"; SERVICE_ROOT="$PLUGIN_DATA_ROOT/$SERVICE"; LINKS_FILE="$SERVICE_ROOT/LINKS"
-    SERVICE_NAME=$(get_service_name "$SERVICE")
+    SERVICE_NAME="$(get_service_name "$SERVICE")"
 
     [[ -s "$LINKS_FILE" ]] && dokku_log_fail "Cannot delete linked service"
 
@@ -102,7 +102,7 @@ case "$1" in
     [[ -z $2 ]] && dokku_log_fail "Please specify a name for the service"
     verify_service_name "$2"
     SERVICE="$2"; SERVICE_ROOT="$PLUGIN_DATA_ROOT/$SERVICE"
-    SERVICE_NAME=$(get_service_name "$SERVICE")
+    SERVICE_NAME="$(get_service_name "$SERVICE")"
 
     [[ -n $SSH_TTY ]] && stty -opost
     docker exec "$SERVICE_NAME" bash -c "echo SAVE | redis-cli" > /dev/null 2>&1
@@ -116,7 +116,7 @@ case "$1" in
     [[ -z $2 ]] && dokku_log_fail "Please specify a name for the service"
     verify_service_name "$2"
     SERVICE="$2"; SERVICE_ROOT="$PLUGIN_DATA_ROOT/$SERVICE"
-    SERVICE_NAME=$(get_service_name "$SERVICE")
+    SERVICE_NAME="$(get_service_name "$SERVICE")"
 
     if [[ -t 0 ]]; then
       dokku_log_fail "No data provided on stdin."
@@ -156,7 +156,7 @@ case "$1" in
     [[ -z $2 ]] && dokku_log_fail "Please specify a name for the service"
     verify_service_name "$2"
     SERVICE="$2"; SERVICE_ROOT="$PLUGIN_DATA_ROOT/$SERVICE"
-    SERVICE_NAME=$(get_service_name "$SERVICE")
+    SERVICE_NAME="$(get_service_name "$SERVICE")"
     has_tty && SERVICE_TTY_OPTS="-t"
 
     docker exec -i $SERVICE_TTY_OPTS "$SERVICE_NAME" redis-cli
diff --git a/functions b/functions
index e83cdce..11becb8 100755
--- a/functions
+++ b/functions
@@ -33,7 +33,7 @@ verify_service_name() {
 
 service_alias() {
   local SERVICE="$1"
-  local SERVICE_NAME=$(get_service_name "$SERVICE")
+  local SERVICE_NAME="$(get_service_name "$SERVICE")"
   echo "$SERVICE_NAME" | tr ._ -
 }
 
@@ -73,7 +73,7 @@ service_link() {
   local SERVICE="$1"
   update_plugin_scheme_for_app "$APP"
   local SERVICE_URL=$(service_url "$SERVICE")
-  local SERVICE_NAME=$(get_service_name "$SERVICE")
+  local SERVICE_NAME="$(get_service_name "$SERVICE")"
   local SERVICE_ROOT="$PLUGIN_DATA_ROOT/$SERVICE"
   local EXISTING_CONFIG=$(config_all "$APP")
   local LINK=$(echo "$EXISTING_CONFIG" | grep "$SERVICE_URL" | cut -d: -f1) || true
@@ -186,7 +186,7 @@ service_port_unexpose() {
 service_port_unpause() {
   local SERVICE="$1"
   local SERVICE_ROOT="$PLUGIN_DATA_ROOT/$SERVICE"
-  local SERVICE_NAME=$(get_service_name "$SERVICE")
+  local SERVICE_NAME="$(get_service_name "$SERVICE")"
   local EXPOSED_NAME="${SERVICE_NAME}.ambassador"
   local PORT_FILE="$SERVICE_ROOT/PORT"
   local LOG_FAIL="$2"
@@ -225,7 +225,7 @@ service_start() {
   local SERVICE="$1"
   local QUIET="$2"
   local SERVICE_ROOT="$PLUGIN_DATA_ROOT/$SERVICE"
-  local SERVICE_NAME=$(get_service_name "$SERVICE")
+  local SERVICE_NAME="$(get_service_name "$SERVICE")"
   local ID=$(docker ps -f status=running | grep -e "$SERVICE_NAME$" | awk '{print $1}') || true
   if [[ -n $ID ]]; then
     [[ -z $QUIET ]] && dokku_log_warn "Service is already started"
@@ -250,7 +250,7 @@ service_start() {
 service_create_container() {
   local SERVICE="$1"
   local SERVICE_ROOT="$PLUGIN_DATA_ROOT/$SERVICE"
-  local SERVICE_NAME=$(get_service_name "$SERVICE")
+  local SERVICE_NAME="$(get_service_name "$SERVICE")"
 
   ID=$(docker run --name "$SERVICE_NAME" -v "$SERVICE_ROOT/data:/data" -v "$SERVICE_ROOT/config:/usr/local/etc/redis" --env-file="$SERVICE_ROOT/ENV" -d --restart always --label dokku=service --label dokku.service=redis "$PLUGIN_IMAGE:$PLUGIN_IMAGE_VERSION" redis-server /usr/local/etc/redis/redis.conf)
   echo "$ID" > "$SERVICE_ROOT/ID"
@@ -265,7 +265,7 @@ service_create_container() {
 service_stop() {
   local SERVICE="$1"
   local SERVICE_ROOT="$PLUGIN_DATA_ROOT/$SERVICE";
-  local SERVICE_NAME=$(get_service_name "$SERVICE")
+  local SERVICE_NAME="$(get_service_name "$SERVICE")"
   local ID=$(docker ps -f status=running | grep -e "$SERVICE_NAME$" | awk '{print $1}') || true
   [[ -z $ID ]] && dokku_log_warn "Service is already stopped" && return 0
 
@@ -284,7 +284,7 @@ service_unlink() {
   local SERVICE="$1"
   update_plugin_scheme_for_app "$APP"
   local SERVICE_URL=$(service_url "$SERVICE")
-  local SERVICE_NAME=$(get_service_name "$SERVICE")
+  local SERVICE_NAME="$(get_service_name "$SERVICE")"
   local EXISTING_CONFIG=$(config_all "$APP")
   local SERVICE_ALIAS=$(service_alias "$SERVICE")
   local LINK=($(echo "$EXISTING_CONFIG" | grep "$SERVICE_URL" | cut -d: -f1)) || true