diff --git a/tools/profiling/microbenchmarks/bm_diff.py b/tools/profiling/microbenchmarks/bm_diff.py
index 0e20a0e4e51..339e9595185 100755
--- a/tools/profiling/microbenchmarks/bm_diff.py
+++ b/tools/profiling/microbenchmarks/bm_diff.py
@@ -101,7 +101,7 @@ argp.add_argument('-t', '--track',
                   help='Which metrics to track')
 argp.add_argument('-b', '--benchmarks', nargs='+', choices=_AVAILABLE_BENCHMARK_TESTS, default=['bm_cq'])
 argp.add_argument('-d', '--diff_base', type=str)
-argp.add_argument('-r', '--repetitions', type=int, default=7)
+argp.add_argument('-r', '--repetitions', type=int, default=4)
 argp.add_argument('-p', '--p_threshold', type=float, default=0.05)
 args = argp.parse_args()