diff --git a/entrypoint.sh b/entrypoint.sh
index c0d8781..24fb586 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -36,10 +36,10 @@ mkdir sboms
 timestamp=$(date +"%Y-%m-%d_%H-%M-%S")
 workflowid=$GITHUB_RUN_ID
 out_file="sboms/inspector-scan-sbom_"
-out_file+=$workflowid
-out_file+=_
-out_file+=$timestamp
-out_file+=.json
+out_file+="$workflowid"
+out_file+="_"
+out_file+="$timestamp"
+out_file+=".json"
 echo "Out file $out_file"
 
 $sbomgen $artifact_type $artifact_path_arg $artifact_path $prog --scan-sbom -o $out_file