diff --git a/dc-ops b/dc-ops
index 6e642dd..e2e0f24 100755
--- a/dc-ops
+++ b/dc-ops
@@ -9,27 +9,27 @@
 h1() { echo "* $*"; }
 msg() { echo "$*"; }
 
-BASEDIR=$(dirname $0)
+BASEDIR=$(dirname "$0")
 
 # use list from file or passed parameters
-STACKLIST=$(cat $BASEDIR/stacklist 2>/dev/null)
+STACKLIST=$(cat "$BASEDIR/stacklist" 2>/dev/null)
 [[ $# -gt 0 ]] && STACKLIST=$*
 
 # iterate list
 for LINE in $STACKLIST; do
-	grep -q "^[[:space:]]*#" <<<$LINE && continue	 # skip comments
+	grep -q "^[[:space:]]*#" <<<"$LINE" && continue	 # skip comments
 
 	# determine if passed a directory or a file
 	STACKDIR=$LINE
 	if [[ -f $LINE ]]; then
-		STACKDIR=$(dirname $LINE)
+		STACKDIR=$(dirname "$LINE")
 		COMPOSEFILE=$LINE
 	fi
 
 	h1 "processing $STACKDIR"
 
 	# skip if directroy not found
-	cd $STACKDIR || continue
+	cd "$STACKDIR" || continue
 
 	# fetch from repo and check for new commits
 	git fetch --quiet
@@ -40,5 +40,5 @@ for LINE in $STACKLIST; do
 
 	# pull new commits and run docker compose
 	git pull
-	docker compose --file ${COMPOSEFILE:=docker-compose.yml} up --build --detach --remove-orphans
+	docker compose --file "${COMPOSEFILE:=docker-compose.yml}" up --build --detach --remove-orphans
 done