diff --git a/paddle/fluid/inference/io.cc b/paddle/fluid/inference/io.cc
index 5b8dec199d90c12a0a2781c385da9942625b766a..65db7c7b5008dcb301e741ec17c3623715e10bb8 100644
--- a/paddle/fluid/inference/io.cc
+++ b/paddle/fluid/inference/io.cc
@@ -22,8 +22,8 @@ limitations under the License. */
 #include "paddle/fluid/framework/op_registry.h"
 #include "paddle/fluid/pybind/pybind.h"
 
-DEFINE_string(devices, "", "The devices to be used.");
-DEFINE_bool(init_p2p, true, "Whether to init p2p.");
+DEFINE_string(devices, "", "The devices to be used which is joined by comma.");
+DEFINE_bool(init_p2p, false, "Whether to init p2p.");
 
 namespace paddle {
 namespace inference {