diff --git a/tools/ci/run_ci.sh b/tools/ci/run_ci.sh
index 1104d4cc..fa6b30eb 100755
--- a/tools/ci/run_ci.sh
+++ b/tools/ci/run_ci.sh
@@ -245,9 +245,9 @@ function run_code_checker() {
 
   set +e +o pipefail
   CodeChecker check --logfile build-wakaama/compile_commands.json \
-                    --config "$config_file" \
-                    --ignore "$ignore_file" \
-                    --output $code_checker_result_dir \
+                    --config "${config_file}" \
+                    --ignore "${ignore_file}" \
+                    --output ${code_checker_result_dir} \
                     || true  # Currently failing with found issues
   set -e -o pipefail