diff --git a/README.md b/README.md
index 199abe8..07b266c 100644
--- a/README.md
+++ b/README.md
@@ -12,5 +12,5 @@ $ ./rere.py record test.list
 The above command should create `test.list.bi` file with stdout, stderr, and returncode captured as the expected behavior.
 3. Replay the command lines checking their behavior against the recorded one:
 ```console
-$ ./rere.py replay test.list.bia
+$ ./rere.py replay test.list.bi
 ```