diff --git a/install.sh b/install.sh
index b895365..92e2000 100755
--- a/install.sh
+++ b/install.sh
@@ -17,11 +17,12 @@
 	# replace uid and gid in config file
 	sed -i "/^OPENHAB_USER/c\\\OPENHAB_USER_ID=${uid}" openhab.conf
 
-	# replace architecture
+	# replace architecture dependend
 	if [[ $arc == "x86_64" ]]; then
 		sed -i "/^OPENHAB_ARCH=/c\\\OPENHAB_ARCH=amd64" openhab.conf
 	elif [[ $arc == *"armv"* ]]; then
 		sed -i "/^OPENHAB_ARCH=/c\\\OPENHAB_ARCH=armhf" openhab.conf
+		sed -i "/^#OPENHAB_MEMORY_LIMIT=/c\\\OPENHAB_MEMORY_LIMIT=512m" openhab.conf
 	else
 		echo "unsupportet architecture"
 		exit 1