diff --git a/test/common/tracing/lightstep_tracer_impl_test.cc b/test/common/tracing/lightstep_tracer_impl_test.cc
index d87e0397bb12..94bd02be5164 100644
--- a/test/common/tracing/lightstep_tracer_impl_test.cc
+++ b/test/common/tracing/lightstep_tracer_impl_test.cc
@@ -95,7 +95,7 @@ class LightStepDriverTest : public Test {
 TEST_F(LightStepDriverTest, LightStepLogger) {
   LightStepLogger logger;
 
-  // Verify calls to logger don't crash
+  // Verify calls to logger don't crash.
   logger(lightstep::LogLevel::debug, "abc");
   logger(lightstep::LogLevel::info, "abc");
   logger(lightstep::LogLevel::error, "abc");