diff --git a/bootstrap.sh b/bootstrap.sh
index 5416c76..fb3b5b3 100755
--- a/bootstrap.sh
+++ b/bootstrap.sh
@@ -4,9 +4,11 @@ set -e
 CURLOPT=${CURLOPT:-"--location --remote-time --remote-name --show-error --silent --fail --tlsv1.2"}
 
 # root part
-curl "$CURLOPT" https://gitlab.com/schtobia/bootstrap/raw/master/bootstrap-root.sh \
+# shellcheck disable=SC208
+curl $CURLOPT https://gitlab.com/schtobia/bootstrap/raw/master/bootstrap-root.sh \
     && chmod +x bootstrap-root.sh
 
 # userspace part
-curl "$CURLOPT" https://gitlab.com/schtobia/bootstrap/raw/master/bootstrap-user.sh \
+# shellcheck disable=SC208
+curl $CURLOPT https://gitlab.com/schtobia/bootstrap/raw/master/bootstrap-user.sh \
     && chmod +x bootstrap-user.sh