diff --git a/doc/contributing/building_ruby.md b/doc/contributing/building_ruby.md
index d73d2d6c94..02efb2384f 100644
--- a/doc/contributing/building_ruby.md
+++ b/doc/contributing/building_ruby.md
@@ -60,6 +60,7 @@
 
         ``` shell
         git clone https://github.com/ruby/ruby.git
+        cd ruby
         ```
 
         Generate the configure file: