diff --git a/csrc/matmul_allreduce_add_rmsnorm/op_host/aclnn_matmul_allreduce_add_rmsnorm.cpp b/csrc/matmul_allreduce_add_rmsnorm/op_host/aclnn_matmul_allreduce_add_rmsnorm.cpp
index ec71fa91..396da512 100644
--- a/csrc/matmul_allreduce_add_rmsnorm/op_host/aclnn_matmul_allreduce_add_rmsnorm.cpp
+++ b/csrc/matmul_allreduce_add_rmsnorm/op_host/aclnn_matmul_allreduce_add_rmsnorm.cpp
@@ -26,6 +26,10 @@ enum NnopbaseHcclServerType {
 };
 extern "C" void __attribute__((weak)) NnopbaseSetHcclServerType(void *executor, NnopbaseHcclServerType sType);
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 extern aclnnStatus aclnnInnerMatmulAllreduceAddRmsnormGetWorkspaceSize(
     const aclTensor *x1,
     const aclTensor *x2,
@@ -48,10 +52,6 @@ extern aclnnStatus aclnnInnerMatmulAllreduceAddRmsnorm(
     aclOpExecutor *executor,
     aclrtStream stream);
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 aclnnStatus aclnnMatmulAllreduceAddRmsnormGetWorkspaceSize(
     const aclTensor *x1,
     const aclTensor *x2,