diff --git a/BUILD.gn b/BUILD.gn
index ca7e3b03edc3470131ebf1b4502b5b9f8d5f0eb1..f6072501df51b8834d7389122f52b4d9bfc5ae0e 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -136,6 +136,9 @@ ohos_static_library("protobuf_lite_static") {
     "-Wno-sign-compare",
     "-Wno-deprecated-declarations",
   ]
+  if (host_os == "mac") {
+    cflags_cc += [ "-faligned-allocation" ]
+  }
   cflags = [
     "-Wno-deprecated-declarations",
     "-Wno-sign-compare",
@@ -299,6 +302,9 @@ ohos_static_library("protobuf_static") {
     "-Wno-sign-compare",
     "-Wno-deprecated-declarations",
   ]
+  if (host_os == "mac") {
+    cflags_cc += [ "-faligned-allocation" ]
+  }
   cflags = [
     "-Wno-sign-compare",
     "-D HAVE_PTHREAD",