diff --git a/testing/common/matchers.h b/testing/common/matchers.h
index afb98528..cfaad182 100644
--- a/testing/common/matchers.h
+++ b/testing/common/matchers.h
@@ -26,7 +26,7 @@
 namespace kaleidoscope {
 namespace testing {
 
-auto ContainsKey(Key key) { return ::testing::Contains(key.getKeyCode()); }
+auto Contains(Key key) { return ::testing::Contains(key.getKeyCode()); }
 
 }  // namespace testing
 }  // namespace kaleidoscope
diff --git a/testing/kaleidoscope/test/simulator_test.cpp b/testing/kaleidoscope/test/simulator_test.cpp
index a577382f..b91e009d 100644
--- a/testing/kaleidoscope/test/simulator_test.cpp
+++ b/testing/kaleidoscope/test/simulator_test.cpp
@@ -44,7 +44,7 @@ TEST_F(KeyboardReports, KeysActiveWhenPressed) {
   ASSERT_EQ(state->KeyboardReports().size(), 1);
   EXPECT_THAT(
       state->KeyboardReports(0).ActiveKeycodes(),
-      ContainsKey(Key_A));
+      Contains(Key_A));
 
   sim_.Release(2, 1);  // A
   state = RunCycle();