diff --git a/.github/workflows/licenses.yml b/.github/workflows/licenses.yml
index 9a7b78a..9167057 100644
--- a/.github/workflows/licenses.yml
+++ b/.github/workflows/licenses.yml
@@ -133,6 +133,6 @@ jobs:
             if [[ -z $(which license-checker) ]]; then
               npm install -g license-checker;
             fi
-            license-checker --production --onlyAllow "$SPDX_ALLOWED_DELIMITED" --unknown --out /dev/null --excludePackages $EXCLUDE_PACKAGES
+            license-checker --production --onlyAllow '$SPDX_ALLOWED_DELIMITED' --unknown --out /dev/null --excludePackages $EXCLUDE_PACKAGES
           done
           echo "Passed"