diff --git a/src/operators/kernel/arm/conv_add_bn_relu_kernel.cpp b/src/operators/kernel/arm/conv_add_bn_relu_kernel.cpp
index eb55920621db34d191a9536f287ec50747e1ce3c..3380cf5b56ba4ffd9f97b2921d9f2abeb6b125a7 100644
--- a/src/operators/kernel/arm/conv_add_bn_relu_kernel.cpp
+++ b/src/operators/kernel/arm/conv_add_bn_relu_kernel.cpp
@@ -15,6 +15,7 @@ limitations under the License. */
 #ifdef FUSION_CONVADDBNRELU_OP
 
 #include "operators/kernel/conv_add_bn_relu_kernel.h"
+#include <math.h>
 #include "operators/kernel/central-arm-func/conv_add_bn_relu_arm_func.h"
 
 namespace paddle_mobile {