diff --git a/benchmark/benchncnn.cpp b/benchmark/benchncnn.cpp
index d2bc37569..2cba6603f 100644
--- a/benchmark/benchncnn.cpp
+++ b/benchmark/benchncnn.cpp
@@ -170,7 +170,7 @@ void benchmark(const char* comment, const std::vector<ncnn::Mat>& _in, const ncn
 
     time_avg /= g_loop_count;
 
-    fprintf(stderr, "%20s  min = %7.2f  max = %7.2f  avg = %7.2f\n", comment, time_min, time_max, time_avg);
+    fprintf(stderr, "%20s  min = %7.2f  max = %7.2f  avg = %7.2f ms\n", comment, time_min, time_max, time_avg);
 }
 
 void benchmark(const char* comment, const ncnn::Mat& _in, const ncnn::Option& opt, bool fixed_path = true)