diff --git a/tests/benchmark.cc b/tests/benchmark.cc
index e580bf2a28..3d9a72a7ec 100644
--- a/tests/benchmark.cc
+++ b/tests/benchmark.cc
@@ -2,12 +2,12 @@
 #include <benchmark/benchmark.h>
 #include <string.h>
 
-// For parsing speed tests.
+// For benchmarks of parsing speed.
 #include "tests/descriptor.pb.h"
 #include "tests/descriptor.upb.h"
 #include "tests/descriptor.upbdefs.h"
 
-// For descriptor building benchmarks.
+// For for benchmarks of building descriptors.
 #include "google/protobuf/descriptor.upb.h"
 #include "google/protobuf/descriptor.pb.h"