diff --git a/tests/use_case/kws/InferenceTestDSCNN.cc b/tests/use_case/kws/InferenceTestDSCNN.cc
index 06358a4..d02e33c 100644
--- a/tests/use_case/kws/InferenceTestDSCNN.cc
+++ b/tests/use_case/kws/InferenceTestDSCNN.cc
@@ -22,6 +22,8 @@
 #include <catch.hpp>
 #include <random>
 
+using namespace test;
+
 bool RunInference(arm::app::Model& model, const int8_t vec[])
 {
     TfLiteTensor* inputTensor = model.GetInputTensor(0);