diff --git a/src/framework/executor.cpp b/src/framework/executor.cpp
index 3641cb963d29b2d3ba4a0bfe241f38a7d1b7bc36..884f5200f2bd9ec1b86429b4d37c3e58ea16724e 100644
--- a/src/framework/executor.cpp
+++ b/src/framework/executor.cpp
@@ -399,8 +399,7 @@ void Executor<Device, T>::FeedData(const Tensor &t) {
 
 template <typename Device, typename T>
 std::shared_ptr<Tensor> Executor<Device, T>::FetchResult(int id) {
-  std::shared_ptr<BlockDesc> to_predict_block = program_desc_->Block(0);
-  auto &ops = ops_of_block_[*to_predict_block.get()];
+  auto &ops = ops_of_block_[0];
 
   PADDLE_MOBILE_ENFORCE(id < (int)ops.size(), "Index out of range");
   auto op = id < 0 ? ops[ops.size() - 1] : ops[id];
@@ -414,8 +413,7 @@ std::shared_ptr<Tensor> Executor<Device, T>::FetchResult(int id) {
 
 template <typename Device, typename T>
 void Executor<Device, T>::Predict_From_To(int start, int end) {
-  std::shared_ptr<BlockDesc> to_predict_block = program_desc_->Block(0);
-  auto &ops = ops_of_block_[*to_predict_block.get()];
+  auto &ops = ops_of_block_[0];
   end = end < 0 ? static_cast<int>(ops.size()) : end;
   PADDLE_MOBILE_ENFORCE(start >= 0 && start < end && end <= ops.size(),
                         "start or end parameter is wrong");
diff --git a/src/operators/kernel/fpga/V1/conv_bn_kernel.cpp b/src/operators/kernel/fpga/V1/conv_bn_kernel.cpp
index ac9f19e411a87bb31e320df504a0e1c88e195454..da10350553ddef7a15414b1583580219491e2306 100644
--- a/src/operators/kernel/fpga/V1/conv_bn_kernel.cpp
+++ b/src/operators/kernel/fpga/V1/conv_bn_kernel.cpp
@@ -15,6 +15,7 @@ limitations under the License. */
 #ifdef FUSION_CONVBN_OP
 
 #include "operators/kernel/conv_bn_kernel.h"
+#include <cmath>
 
 namespace paddle_mobile {
 namespace operators {
diff --git a/src/operators/kernel/fpga/V1/conv_bn_relu_kernel.cpp b/src/operators/kernel/fpga/V1/conv_bn_relu_kernel.cpp
index 4c9eb391ada9366478877494fbe466d5cf919327..1382b20cdfc201cc5e048871bf3ebac22ef7ba7e 100644
--- a/src/operators/kernel/fpga/V1/conv_bn_relu_kernel.cpp
+++ b/src/operators/kernel/fpga/V1/conv_bn_relu_kernel.cpp
@@ -15,6 +15,7 @@ limitations under the License. */
 #ifdef FUSION_CONVBNRELU_OP
 
 #include "operators/kernel/conv_bn_relu_kernel.h"
+#include <cmath>
 
 namespace paddle_mobile {
 namespace operators {
diff --git a/src/operators/math/softmax.cpp b/src/operators/math/softmax.cpp
index 756f707d95e5a2338c9707b40e0eb008d956a2b2..48f8b35ea22f30ceb7e9bf8bcefa815a63b6e9dc 100644
--- a/src/operators/math/softmax.cpp
+++ b/src/operators/math/softmax.cpp
@@ -97,7 +97,7 @@ void SoftmaxFuntor<CPU, float>::operator()(const framework::Tensor *X,
       }
 #endif  // __ARM_NEON__
       for (int i = 0; i < remain; ++i) {
-        output[i] = std::expf(input[i] - max);
+        output[i] = expf(input[i] - max);
       }
 
       // sum(exp(x - max))