diff --git a/install-module.pl b/install-module.pl
old mode 100644
new mode 100755
index ca99ac23dc147a3bdd35201cb107bd52264c3573..9366189876ddafb0bc9736806eb0ce43eee6c861
--- a/install-module.pl
+++ b/install-module.pl
@@ -112,7 +112,7 @@ This script does not run on Windows.
 
   ./install-module.pl Module::Name [--global]
   ./install-module.pl --all [--global]
-  ./install-module.pl --all-upgrade [--global]
+  ./install-module.pl --upgrade-all [--global]
   ./install-module.pl --show-config
 
   Do "./install-module.pl --help" for more information.