diff --git a/micro/test/ccbenchmark/micro/ops/activation_benchmark.cc b/micro/test/ccbenchmark/micro/ops/activation_benchmark.cc
index d37d3a863d17c4da859621be2458c12d8dc1bfcf..6272f4455b7d12514181a85d15a4109f7793599e 100644
--- a/micro/test/ccbenchmark/micro/ops/activation_benchmark.cc
+++ b/micro/test/ccbenchmark/micro/ops/activation_benchmark.cc
@@ -56,7 +56,6 @@ void ActivationBenchmark(const char *activation_type, int iters,
   static void MICRO_BM##_##TYPE##_##N##_##H##_##W##_##C(int32_t iters) { \
     const int32_t buffer_length = N * H * W * C;                         \
     MACE_DEFINE_RANDOM_INPUT(float, input, buffer_length);               \
-    MACE_DEFINE_RANDOM_INPUT(float, input, buffer_length);               \
     float *output =                                                      \
         common::test::GetGlobalBuffer()->GetBuffer<float>(buffer_length);\
     int32_t input_dims[] = {N, H, W, C};                                 \