diff --git a/perf/benchmark-subset.cc b/perf/benchmark-subset.cc
index 0c2f903b8..9f9ec5666 100644
--- a/perf/benchmark-subset.cc
+++ b/perf/benchmark-subset.cc
@@ -263,9 +263,9 @@ int main(int argc, char** argv)
 
 #define TEST_OPERATION(op, time_unit) test_operation (op, #op, tests, num_tests, time_unit)
 
-  TEST_OPERATION (subset_glyphs, benchmark::kMillisecond);
-  TEST_OPERATION (subset_codepoints, benchmark::kMillisecond);
-  TEST_OPERATION (instance, benchmark::kMillisecond);
+  TEST_OPERATION (subset_glyphs, benchmark::kMicrosecond);
+  TEST_OPERATION (subset_codepoints, benchmark::kMicrosecond);
+  TEST_OPERATION (instance, benchmark::kMicrosecond);
 
 #undef TEST_OPERATION