diff --git a/src/brpc/policy/http2_rpc_protocol.cpp b/src/brpc/policy/http2_rpc_protocol.cpp
index ab14863c1f..c9718f4cb4 100644
--- a/src/brpc/policy/http2_rpc_protocol.cpp
+++ b/src/brpc/policy/http2_rpc_protocol.cpp
@@ -1281,8 +1281,7 @@ int H2StreamContext::ConsumeHeaders(butil::IOBufBytesIterator& it) {
                    strcmp(name + 1, /*c*/"ontent-type") == 0) {
             h.set_content_type(pair.value);
         } else {
-            // TODO: AppendHeader?
-            h.SetHeader(pair.name, pair.value);
+            h.AppendHeader(pair.name, pair.value);
         }
 
         if (FLAGS_http_verbose) {
diff --git a/test/brpc_http_rpc_protocol_unittest.cpp b/test/brpc_http_rpc_protocol_unittest.cpp
index 0698651e31..a201d923c0 100644
--- a/test/brpc_http_rpc_protocol_unittest.cpp
+++ b/test/brpc_http_rpc_protocol_unittest.cpp
@@ -1544,7 +1544,7 @@ TEST_F(HttpTest, http2_header_after_data) {
     ASSERT_EQ(res_header.content_type(), "application/proto");
     // Check overlapped header is overwritten by the latter.
     const std::string* user_defined1 = res_header.GetHeader("user-defined1");
-    ASSERT_EQ(*user_defined1, "overwrite-a");
+    ASSERT_EQ(*user_defined1, "a,overwrite-a");
     const std::string* user_defined2 = res_header.GetHeader("user-defined2");
     ASSERT_EQ(*user_defined2, "b");
 }