diff --git a/paddle/fluid/operators/lrn_op.cc b/paddle/fluid/operators/lrn_op.cc
index 6bd451a118afeffd4f5dd80e2450c491ef6d55b0..00db09ece32156be414f98bc46eb8d47b5c21689 100644
--- a/paddle/fluid/operators/lrn_op.cc
+++ b/paddle/fluid/operators/lrn_op.cc
@@ -119,6 +119,26 @@ struct LRNGradFunctor<platform::CPUDeviceContext, T> {
 template struct LRNGradFunctor<platform::CPUDeviceContext, float>;
 template struct LRNGradFunctor<platform::CPUDeviceContext, double>;
 
+namespace {
+   framework::OpKernelType GetExpectedLRNKernel(
+      const framework::ExecutionContext& ctx) {
+    framework::LibraryType library_{framework::LibraryType::kPlain};
+#ifdef PADDLE_WITH_MKLDNN
+    if (library_ == framework::LibraryType::kPlain &&
+        platform::CanMKLDNNBeUsed(ctx)) {
+      library_ = framework::LibraryType::kMKLDNN;
+    }
+#endif
+
+    std::string data_format = ctx.Attr<std::string>("data_format");
+    // TODO(pzelazko-intel): enable MKLDNN layout when it's ready
+    framework::DataLayout layout_ = framework::StringToDataLayout(data_format);
+    return framework::OpKernelType(
+        framework::ToDataType(ctx.Input<Tensor>("X")->type()), ctx.GetPlace(),
+        layout_, library_);
+  }
+}
+
 class LRNOp : public framework::OperatorWithKernel {
  public:
   using framework::OperatorWithKernel::OperatorWithKernel;
@@ -140,21 +160,8 @@ class LRNOp : public framework::OperatorWithKernel {
   }
 
   framework::OpKernelType GetExpectedKernelType(
-      const framework::ExecutionContext& ctx) const {
-    framework::LibraryType library_{framework::LibraryType::kPlain};
-#ifdef PADDLE_WITH_MKLDNN
-    if (library_ == framework::LibraryType::kPlain &&
-        platform::CanMKLDNNBeUsed(ctx)) {
-      library_ = framework::LibraryType::kMKLDNN;
-    }
-#endif
-
-    std::string data_format = ctx.Attr<std::string>("data_format");
-    // TODO(pzelazko-intel): enable MKLDNN layout when it's ready
-    framework::DataLayout layout_ = framework::StringToDataLayout(data_format);
-    return framework::OpKernelType(
-        framework::ToDataType(ctx.Input<Tensor>("X")->type()), ctx.GetPlace(),
-        layout_, library_);
+      const framework::ExecutionContext& ctx) const override {
+    return GetExpectedLRNKernel(ctx);
   }
 };
 
@@ -261,21 +268,8 @@ class LRNOpGrad : public framework::OperatorWithKernel {
   }
 
   framework::OpKernelType GetExpectedKernelType(
-      const framework::ExecutionContext& ctx) const {
-    framework::LibraryType library_{framework::LibraryType::kPlain};
-#ifdef PADDLE_WITH_MKLDNN
-    if (library_ == framework::LibraryType::kPlain &&
-        platform::CanMKLDNNBeUsed(ctx)) {
-      library_ = framework::LibraryType::kMKLDNN;
-    }
-#endif
-
-    std::string data_format = ctx.Attr<std::string>("data_format");
-    // TODO(pzelazko-intel): enable MKLDNN layout when it's ready
-    framework::DataLayout layout_ = framework::StringToDataLayout(data_format);
-    return framework::OpKernelType(
-        framework::ToDataType(ctx.Input<Tensor>("X")->type()), ctx.GetPlace(),
-        layout_, library_);
+      const framework::ExecutionContext& ctx) const override {
+    return GetExpectedLRNKernel(ctx);
   }
 };
 }  // namespace operators