diff --git a/mindspore/lite/nnacl/common_func.c b/mindspore/lite/nnacl/common_func.c
index 8bf49572a3..def3913b67 100644
--- a/mindspore/lite/nnacl/common_func.c
+++ b/mindspore/lite/nnacl/common_func.c
@@ -228,4 +228,3 @@ void IndirectGemmFp32_Comm(float *output, const float *input, const float *weigh
   }
   return;
 }
-
diff --git a/mindspore/lite/nnacl/common_func.h b/mindspore/lite/nnacl/common_func.h
index 4a69715571..93a761e1fd 100644
--- a/mindspore/lite/nnacl/common_func.h
+++ b/mindspore/lite/nnacl/common_func.h
@@ -46,16 +46,16 @@ void IndirectGemmFp32(float *output, const float *input, const float *weight, co
 int offset(const int *shape, const int dim0, const int dim1, const int dim2, const int dim3);
 int offsetComm(const int *shape, const int dim0, const int dim1, const int dim2);
 int offset4d(const int *shape, const int *dims);
-inline bool isAddOverflow(int32_t x, int32_t y) {
+
+static inline bool isAddOverflow(int32_t x, int32_t y) {
   int32_t sum = x + y;
   return (x > 0 && y > 0 && sum < 0) || (x < 0 && y < 0 && sum > 0);
 }
 
-inline bool isMulOverflow(int32_t x, int32_t y) {
+static inline bool isMulOverflow(int32_t x, int32_t y) {
   int32_t p = x * y;
   return (x != 0) && (p / x != y);
 }
-
 #ifdef ENABLE_ARM64
 void BiasAdd(const float *bias, float *data, size_t oc4, size_t plan_size);
 void BiasAddRelu6(const float *bias, float *data, size_t oc4, size_t plan_size);
diff --git a/mindspore/lite/nnacl/int8/reduce_int8.h b/mindspore/lite/nnacl/int8/reduce_int8.h
index 39d31fdc98..b27634d630 100644
--- a/mindspore/lite/nnacl/int8/reduce_int8.h
+++ b/mindspore/lite/nnacl/int8/reduce_int8.h
@@ -45,8 +45,6 @@ int ReduceSumSquareLastAxis(const int outer_size, const int inner_size, const in
                             int8_t *dst_data, const ReduceQuantArg *quant, const int tid, const int thread_num);
 int ReduceSumSquareInt8(const int outer_size, const int inner_size, const int axis_size, const int32_t *src_data,
                         int32_t *dst_data, const ReduceQuantArg *quant, const int tid, const int thread_num);
-bool isAddOverflow(int32_t x, int32_t y);
-bool isMulOverflow(int32_t x, int32_t y);
 #ifdef __cplusplus
 }
 #endif