diff --git a/README.md b/README.md
index 52133b5..ec7285b 100644
--- a/README.md
+++ b/README.md
@@ -486,10 +486,9 @@ Alternative to the `dirname` command.
 dirname() {
     # Usage: dirname "path"
     dir=${1%%/}
+    [ "${dir##*/*}" ] && dir=.
     dir=${dir%/*}
 
-    [ "${1##*/*}" ] && dir=.
-
     printf '%s\n' "${dir:-/}"
 }
 ```