diff --git a/paddle/fluid/platform/flags.cc b/paddle/fluid/platform/flags.cc
index 8209c0a5d6f8e9812370cb2adeefb2dded7e1d96..18b53563cd64eb6807f8198ff2d2cef67cf5d4b5 100644
--- a/paddle/fluid/platform/flags.cc
+++ b/paddle/fluid/platform/flags.cc
@@ -534,6 +534,11 @@ PADDLE_DEFINE_EXPORTED_double(
     "you should set FLAGS_local_exe_sub_scope_limit=-1. "
     "The default value is 256 MBytes.");
 
+PADDLE_DEFINE_EXPORTED_bool(
+    reader_queue_speed_test_mode, false,
+    "If set true, the queue.pop will only get data from queue but not "
+    "remove the data from queue for speed testing");
+
 /**
  * MKLDNN related FLAG
  * Name: use_mkldnn
diff --git a/paddle/fluid/pybind/reader_py.cc b/paddle/fluid/pybind/reader_py.cc
index 8c456a2d980d36b4049df7bcecaf2ff8767dc8ff..e0aab0dd06ecbbaff9b870a3b6497da2279ebd12 100644
--- a/paddle/fluid/pybind/reader_py.cc
+++ b/paddle/fluid/pybind/reader_py.cc
@@ -32,10 +32,7 @@
 #include "paddle/phi/core/ddim.h"
 #include "pybind11/stl.h"
 
-PADDLE_DEFINE_EXPORTED_bool(
-    reader_queue_speed_test_mode, false,
-    "If set true, the queue.pop will only get data from queue but not "
-    "remove the data from queue for speed testing");
+DECLARE_bool(reader_queue_speed_test_mode);
 
 // disable auto conversion to list in Python
 PYBIND11_MAKE_OPAQUE(paddle::framework::LoDTensorArray);