diff --git a/cpp/main.cpp b/cpp/test_glicko2.cpp
similarity index 100%
rename from cpp/main.cpp
rename to cpp/test_glicko2.cpp
diff --git a/rb/glicko2_test.rb b/rb/test_glicko2.rb
similarity index 100%
rename from rb/glicko2_test.rb
rename to rb/test_glicko2.rb