diff --git a/t.sh b/t.sh
index 76908a5..d961656 100755
--- a/t.sh
+++ b/t.sh
@@ -1214,6 +1214,7 @@ for x in $valid_modes; do
     if [[ $1 =~ ^(${tomatch})$ ]]; then
         mode=$x
         shift
+        break
     fi
 done