diff --git a/.templates/01-custom_script.sh b/.templates/01-custom_script.sh
index 11f9549f0..4a63ccefc 100755
--- a/.templates/01-custom_script.sh
+++ b/.templates/01-custom_script.sh
@@ -6,8 +6,8 @@ set -e
 # INITIALIZATION #
 ##################
 
-# Exit if /config is not mounted
-if [ ! -d /config ]; then
+# Exit if /config is not mounted or HA not used
+if [ ! -d /config ] || ! bashio::supervisor.ping 2>/dev/null; then
     exit 0
 fi