diff --git a/paddle/fluid/operators/uniform_random_op.cc b/paddle/fluid/operators/uniform_random_op.cc
index 155690a6f46b0dc4d417c1da443479dd702f72b5..acaefaacdaa593c090d81084fdc1b3665314833f 100644
--- a/paddle/fluid/operators/uniform_random_op.cc
+++ b/paddle/fluid/operators/uniform_random_op.cc
@@ -24,7 +24,7 @@ template <typename T>
 class CPUUniformRandomKernel : public framework::OpKernel<T> {
  public:
   void Compute(const framework::ExecutionContext& ctx) const override {
-    framework::Tensor* tensor(nullptr);
+    framework::Tensor* tensor = nullptr;
     auto out_var = ctx.OutputVar("Out");
     if (out_var->IsType<framework::LoDTensor>()) {
       tensor = out_var->GetMutable<framework::LoDTensor>();
@@ -33,7 +33,9 @@ class CPUUniformRandomKernel : public framework::OpKernel<T> {
       tensor = out_var->GetMutable<framework::SelectedRows>()->mutable_value();
       tensor->Resize(framework::make_ddim(shape));
     } else {
-      PADDLE_THROW("Only support SelectedRows and Tensor");
+      PADDLE_THROW(
+          "uniform_random_op's output only"
+          "supports SelectedRows and Tensor");
     }
     T* data = tensor->mutable_data<T>(ctx.GetPlace());
     unsigned int seed = static_cast<unsigned int>(ctx.Attr<int>("seed"));
diff --git a/paddle/fluid/operators/uniform_random_op.cu b/paddle/fluid/operators/uniform_random_op.cu
index 00011bbe6193eba2445b6cb0daaca385d2c8f35d..e1c7323a30233f4ec4f60e46aa6088ee6d8601b7 100644
--- a/paddle/fluid/operators/uniform_random_op.cu
+++ b/paddle/fluid/operators/uniform_random_op.cu
@@ -43,7 +43,7 @@ template <typename T>
 class GPUUniformRandomKernel : public framework::OpKernel<T> {
  public:
   void Compute(const framework::ExecutionContext& context) const override {
-    framework::Tensor* tensor(nullptr);
+    framework::Tensor* tensor = nullptr;
     auto out_var = context.OutputVar("Out");
     if (out_var->IsType<framework::LoDTensor>()) {
       tensor = out_var->GetMutable<framework::LoDTensor>();
@@ -52,7 +52,9 @@ class GPUUniformRandomKernel : public framework::OpKernel<T> {
       tensor = out_var->GetMutable<framework::SelectedRows>()->mutable_value();
       tensor->Resize(framework::make_ddim(shape));
     } else {
-      PADDLE_THROW("Only support SelectedRows and Tensor");
+      PADDLE_THROW(
+          "uniform_random_op's output only"
+          "supports SelectedRows and Tensor");
     }
     T* data = tensor->mutable_data<T>(context.GetPlace());
     unsigned int seed = static_cast<unsigned int>(context.Attr<int>("seed"));