diff --git a/README.md b/README.md
index 6774d7090..a13b2847f 100644
--- a/README.md
+++ b/README.md
@@ -266,7 +266,7 @@ Currently, the following cases are available for this task:
 - Go
   - [`golang/mistakes`](testdata/golang/mistakes)
 - Ruby
-  - [`rugby/mistakes`](testdata/ruby/mistakes)
+  - [`ruby/mistakes`](testdata/ruby/mistakes)
 
 ### Task: Transpile