diff --git a/entrypoint.sh b/entrypoint.sh
index c43f146..343fa7d 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -33,11 +33,11 @@ ls -lsah
 mkdir sboms
 
 # give the output SBOM a traceable name
-out_file="sboms/inspector-scan-sbom_"
+prefix="sboms/inspector-scan-sbom_"
 #out_file+=echo $GITHUB_RUN_ID
 #out_file+="_"
-out_file+=$(date +"%Y-%m-%d_%H-%M-%S")
-out_file+=$(echo .json)
+dtg=$(date +"%Y-%m-%d_%H-%M-%S")
+out_file=$prefix$dtg.json
 echo "Out file $out_file"
 
 $sbomgen $artifact_type $artifact_path_arg $artifact_path $prog --scan-sbom -o $out_file