diff --git a/paddle/operators/math/math_function.cc b/paddle/operators/math/math_function.cc
index ed49a0a549130a839fbd875db84111c57520cfed..ddb904aa469d25589d9518a2bb38242aefd34470 100644
--- a/paddle/operators/math/math_function.cc
+++ b/paddle/operators/math/math_function.cc
@@ -134,17 +134,6 @@ void matmul<platform::CPUPlace, double>(
 
 template struct SetConstant<platform::CPUPlace, float>;
 
-namespace detail {
-size_t FindPos(const std::vector<int64_t>& rows, int64_t value) {
-  for (size_t i = 0; i < rows.size(); i++) {
-    if (rows[i] == value) {
-      return i;
-    }
-  }
-  return 0;
-}
-}  // namespace detail
-
 template <typename T>
 struct SelectedRowsAdd<platform::CPUPlace, T> {
   void operator()(const platform::DeviceContext& context,
diff --git a/paddle/operators/math/math_function_test.cc b/paddle/operators/math/math_function_test.cc
index e3186171d19f0fdc2d894bb7b2aff722777bd2b4..fe0d1981fa3daf9726391208b7f43d47e0f10b46 100644
--- a/paddle/operators/math/math_function_test.cc
+++ b/paddle/operators/math/math_function_test.cc
@@ -1,5 +1,4 @@
 #include "paddle/operators/math/math_function.h"
-#include "glog/logging.h"
 #include "gtest/gtest.h"
 
 #ifdef PADDLE_WITH_CUDA