diff --git a/be/src/http/http_channel.cpp b/be/src/http/http_channel.cpp
index d554ba367a92e79..598330ff7cbcfbe 100644
--- a/be/src/http/http_channel.cpp
+++ b/be/src/http/http_channel.cpp
@@ -123,11 +123,7 @@ void HttpChannel::send_files(HttpRequest* request, const std::string& root_dir,
         VLOG_DEBUG << "http channel send file " << file_path << ", size: " << file_size;
 
         evbuffer_add_printf(evb.get(), "File-Name: %s\r\n", file.c_str());
-#ifdef __APPLE__
-        evbuffer_add_printf(evb.get(), "Content-Length: %lld\r\n", file_size);
-#else
-        evbuffer_add_printf(evb.get(), "Content-Length: %ld\r\n", file_size);
-#endif
+        evbuffer_add_printf(evb.get(), "Content-Length: %" PRIi64 "\r\n", file_size);
 
         evbuffer_add_printf(evb.get(), "\r\n");
         if (file_size > 0) {