diff --git a/trm.sh b/trm.sh
index 09f4032..138f866 100755
--- a/trm.sh
+++ b/trm.sh
@@ -33,6 +33,7 @@
   echo "              -n            noisy output - verbose mode"
   echo "              -s            don't generate serial number suffixes"
   echo "              -t            test mode, just show what would be done"
+  echo "              -v            display version control commit ID"
   echo "              -x            execute, overrides previous -t"
 }