diff --git a/paddle/math/Matrix.h b/paddle/math/Matrix.h
index 4342ca52a3d6677bea312531cd562895621218c5..5685cb7bcbbb6b90687790953d676e3792f36f36 100644
--- a/paddle/math/Matrix.h
+++ b/paddle/math/Matrix.h
@@ -408,7 +408,7 @@ public:
     LOG(FATAL) << "Not implemented";
   }
 
-  virtual void addBias(Matrix& b, real scale, bool sharedBias) {
+  void addBias(Matrix& b, real scale, bool sharedBias) {
     if (!sharedBias) {
       addBias(b, scale);
     } else {
@@ -425,7 +425,7 @@ public:
     LOG(FATAL) << "Not implemented";
   }
 
-  virtual void collectBias(Matrix& a, real scale, bool sharedBias) {
+  void collectBias(Matrix& a, real scale, bool sharedBias) {
     if (!sharedBias) {
       collectBias(a, scale);
     } else {
diff --git a/paddle/math/tests/CMakeLists.txt b/paddle/math/tests/CMakeLists.txt
index fe5177291c21c3505c3694201b36b54397150ccf..a3ea078509704f305672d0b02d272de0f6c97f51 100644
--- a/paddle/math/tests/CMakeLists.txt
+++ b/paddle/math/tests/CMakeLists.txt
@@ -16,12 +16,10 @@ add_simple_unittest(test_CpuGpuVector)
 add_simple_unittest(test_Allocator)
 
 if(WITH_GPU)
-    if(COMPILER_SUPPORT_CXX11)
-    	CUDA_ADD_EXECUTABLE(test_Tensor test_Tensor.cu)
-		link_paddle_test(test_Tensor)
-        CUDA_ADD_EXECUTABLE(test_lazyAssign test_lazyAssign.cu)
-        link_paddle_test(test_lazyAssign)
-    endif()
+    CUDA_ADD_EXECUTABLE(test_Tensor test_Tensor.cu)
+    link_paddle_test(test_Tensor)
+    CUDA_ADD_EXECUTABLE(test_lazyAssign test_lazyAssign.cu)
+    link_paddle_test(test_lazyAssign)
 else()
     compile_cu_as_cpp(test_Tensor.cu)
     add_unittest(test_Tensor test_Tensor.cu)