diff --git a/tools/arkmanager b/tools/arkmanager
index db53abd..dea38d6 100755
--- a/tools/arkmanager
+++ b/tools/arkmanager
@@ -2662,7 +2662,7 @@ main(){
           echo "Release Tag: ${arkstTag}"
         fi
         blobsize="$(sed "s@^arkst\\(Commit\\|Tag\\)=.*@\\1=''@" "$0" | wc -c)"
-        echo "Blob SHA: $( (echo -ne "blob ${blobsize}\0"; sed "s@^arkst\\(Commit\\|Tag\\)=.*@\\1=''@" "$0") | sha1sum | cut -d' ' -f1)"
+        echo "Blob SHA: $( (echo -ne "blob ${blobsize}\0"; sed "s@^\\(arkst\\(Commit\\|Tag\\)\\)=.*@\\1=''@" "$0") | sha1sum | cut -d' ' -f1)"
         exit 1
       ;;
       -h|--help)