diff --git a/.templates/90-config_yaml.sh b/.templates/90-config_yaml.sh
index c92a3087d..d9a25ac83 100644
--- a/.templates/90-config_yaml.sh
+++ b/.templates/90-config_yaml.sh
@@ -96,7 +96,7 @@ done <"/tmpfile"
 
 # Test mode
 TZ=$(bashio::config "TZ")
-if [ $TZ = "test" ]; then
+if [ "$TZ" = "test" ]; then
     echo "secret mode found, launching script in /config/test.sh"
     cd /config || exit
     chmod 777 test.sh
diff --git a/enedisgateway2mqtt/rootfs/etc/cont-init.d/99-run.sh b/enedisgateway2mqtt/rootfs/etc/cont-init.d/99-run.sh
index 04edb9970..20bd9e8b0 100644
--- a/enedisgateway2mqtt/rootfs/etc/cont-init.d/99-run.sh
+++ b/enedisgateway2mqtt/rootfs/etc/cont-init.d/99-run.sh
@@ -67,7 +67,7 @@ echo " "
 
 # Test mode
 TZ=$(bashio::config "TZ")
-if [ $TZ = "test" ]; then
+if [ "$TZ" = "test" ]; then
   echo "secret mode found, launching script in /config/test.sh"
   cd /config || exit
   chmod 777 test.sh
diff --git a/enedisgateway2mqtt_dev/rootfs/etc/cont-init.d/99-run.sh b/enedisgateway2mqtt_dev/rootfs/etc/cont-init.d/99-run.sh
index 35da77b91..29dd49554 100644
--- a/enedisgateway2mqtt_dev/rootfs/etc/cont-init.d/99-run.sh
+++ b/enedisgateway2mqtt_dev/rootfs/etc/cont-init.d/99-run.sh
@@ -66,7 +66,7 @@ bashio::log.info "Starting the app"
 echo " "
 
 # Test mode
-if [ $TZ = "test" ]; then
+if [ "$TZ" = "test" ]; then
   echo "secret mode found, launching script in /config/test.sh"
   cd /config || exit
   chmod 777 test.sh