diff --git a/entrypoint.sh b/entrypoint.sh
index a40ba50..494c3a2 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -34,7 +34,10 @@ mkdir sboms
 
 # give the output SBOM a traceable name
 timestamp=$(date +"%Y-%m-%d_%H-%M-%S")
-out_file="sboms/inspector-scan-sbom_$GITHUB_RUN_ID_$timestamp.json"
+workflow_id=$GITHUB_RUN_ID
+prefix=sboms/inspector-scan-sbom_
+out_file="$prefix-$workflow_id-$timestamp.json"
+echo "Out file $out_file"
 
 $sbomgen $artifact_type $artifact_path_arg $artifact_path $prog --scan-sbom -o $out_file