diff --git a/src/core/ext/transport/chttp2/transport/context_list.cc b/src/core/ext/transport/chttp2/transport/context_list.cc
index 89e574ac67f..f30d41c3326 100644
--- a/src/core/ext/transport/chttp2/transport/context_list.cc
+++ b/src/core/ext/transport/chttp2/transport/context_list.cc
@@ -32,7 +32,7 @@ void ContextList::Execute(void* arg, grpc_core::Timestamps* ts,
   while (head != nullptr) {
     if (error == GRPC_ERROR_NONE && ts != nullptr) {
       if (write_timestamps_callback_g) {
-        ts->byte_offset = head->byte_offset_;
+        ts->byte_offset = static_cast<uint32_t>(head->byte_offset_);
         write_timestamps_callback_g(head->s_->context, ts);
       }
     }