diff --git a/README.md b/README.md
index df557ec..7339614 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@ $ make r
 
 You can test that the tool is working properly with:
 ```
-$ ./rntviewer ntpl lmext1.root
+$ ./rntviewer lmext1.root ntpl
 ```
 
 ### Usage