diff --git a/paddle/gserver/tests/test_LayerGrad.cpp b/paddle/gserver/tests/test_LayerGrad.cpp
index c19bcc153d213b1b7c9a0e4d9ae0bf7a2e5ec158..c726e5a74eed26aec5cf9ea9aea2386335d06119 100644
--- a/paddle/gserver/tests/test_LayerGrad.cpp
+++ b/paddle/gserver/tests/test_LayerGrad.cpp
@@ -1907,8 +1907,10 @@ TEST(Layer, ClipLayer) {
   config.inputDefs.push_back({INPUT_DATA, "input", size, 0});
   LayerInputConfig* input = config.layerConfig.add_inputs();
   ClipConfig* layerConf = input->mutable_clip_conf();
-  layerConf->set_min(std::rand() / (double)RAND_MAX);
-  layerConf->set_max(std::rand() / (double)RAND_MAX);
+  double p1 = std::rand() / (double)RAND_MAX;
+  double p2 = std::rand() / (double)RAND_MAX;
+  layerConf->set_min(std::min(p1, p2));
+  layerConf->set_max(std::max(p1, p2));
   for (auto useGpu : {false, true}) {
     testLayerGrad(config, "clip", batchSize, false, useGpu, false);
   }