diff --git a/opensync-gateway-cloud-docker/src/main/docker/app/run.sh b/opensync-gateway-cloud-docker/src/main/docker/app/run.sh
index ea389a4..50042bf 100755
--- a/opensync-gateway-cloud-docker/src/main/docker/app/run.sh
+++ b/opensync-gateway-cloud-docker/src/main/docker/app/run.sh
@@ -121,7 +121,7 @@ else
   REMOTE_DEBUG=" "
 fi
 
-JVM_EXTRA_PROPS=" ${JVM_MEM_OPTIONS:-' '} "
+JVM_EXTRA_PROPS=" ${JVM_MEM_OPTIONS:- } "
 
 export ALL_PROPS="$JVM_EXTRA_PROPS $PROFILES $SSL_PROPS $CLIENT_MQTT_SSL_PROPS $OVSDB_PROPS $MQTT_PROPS $LOGGING_PROPS $RESTAPI_PROPS $SPRING_EXTRA_PROPS $HOST_PROPS $PROV_PROPS $FILE_STORE_PROPS $REMOTE_DEBUG"
 
diff --git a/opensync-gateway-static-docker/src/main/docker-opensync-gateway-and-mqtt/app/run.sh b/opensync-gateway-static-docker/src/main/docker-opensync-gateway-and-mqtt/app/run.sh
index a151f0f..17edc81 100755
--- a/opensync-gateway-static-docker/src/main/docker-opensync-gateway-and-mqtt/app/run.sh
+++ b/opensync-gateway-static-docker/src/main/docker-opensync-gateway-and-mqtt/app/run.sh
@@ -174,7 +174,7 @@ RESTAPI_PROPS="$RESTAPI_PROPS -Dserver.port=4043"
 
 SPRING_EXTRA_PROPS=" --add-opens java.base/java.lang=ALL-UNNAMED"
 
-JVM_EXTRA_PROPS=" ${JVM_MEM_OPTIONS:-' '} "
+JVM_EXTRA_PROPS=" ${JVM_MEM_OPTIONS:- } "
 
 export ALL_PROPS="$JVM_EXTRA_PROPS $PROFILES $SSL_PROPS $CLIENT_MQTT_SSL_PROPS $OVSDB_PROPS $MQTT_PROPS $LOGGING_PROPS $RESTAPI_PROPS $SPRING_EXTRA_PROPS "
 
diff --git a/opensync-gateway-static-docker/src/main/docker/app/run.sh b/opensync-gateway-static-docker/src/main/docker/app/run.sh
index b6cf8de..4f433e0 100755
--- a/opensync-gateway-static-docker/src/main/docker/app/run.sh
+++ b/opensync-gateway-static-docker/src/main/docker/app/run.sh
@@ -56,7 +56,7 @@ RESTAPI_PROPS+=" -Dserver.port=443"
 
 SPRING_EXTRA_PROPS=" --add-opens java.base/java.lang=ALL-UNNAMED"
 
-JVM_EXTRA_PROPS=" ${JVM_MEM_OPTIONS:-' '} "
+JVM_EXTRA_PROPS=" ${JVM_MEM_OPTIONS:- } "
 
 export ALL_PROPS="$JVM_EXTRA_PROPS $PROFILES $SSL_PROPS $CLIENT_MQTT_SSL_PROPS $OVSDB_PROPS $MQTT_PROPS $LOGGING_PROPS $RESTAPI_PROPS $SPRING_EXTRA_PROPS"