diff --git a/README.md b/README.md
index c2ab713..37a7556 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ $ make r
 
 You can test that the tool is working properly with:
 ```
-$ ./rntviewer testdata/test_rc3.root
+$ ./rntviewer testdata/RNTuple.root
 ```
 
 To build the terminal-only version:
diff --git a/testdata/RNTuple.root b/testdata/RNTuple.root
new file mode 100644
index 0000000..d469437
Binary files /dev/null and b/testdata/RNTuple.root differ