diff --git a/src/operators/kernel/central-arm-func/norm_arm_func.h b/src/operators/kernel/central-arm-func/norm_arm_func.h
index 8fe7735b0ce357e743d9d33c7ea8e970b82cc535..217a8cac5a435f317a8b16f49c26068bfbee6b20 100644
--- a/src/operators/kernel/central-arm-func/norm_arm_func.h
+++ b/src/operators/kernel/central-arm-func/norm_arm_func.h
@@ -109,8 +109,6 @@ void NormCompute(const NormParam<CPU> &param) {
       out_tmp = out_ptr + i * post;
     }
   }
-
-  delete (square_ptr);
 }
 
 }  // namespace operators