diff --git a/test/syscalls/linux/getcpu.cc b/test/syscalls/linux/getcpu.cc
index 6a0e3758633..52e48b51028 100644
--- a/test/syscalls/linux/getcpu.cc
+++ b/test/syscalls/linux/getcpu.cc
@@ -24,6 +24,7 @@ namespace testing {
 
 namespace {
 
+// Dummy change to trigger tests.
 TEST(GetcpuTest, IsValidCpuStress) {
   const int num_cpus = NumCPUs();
   absl::Time deadline = absl::Now() + absl::Seconds(10);