diff --git a/paddle/fluid/framework/framework.proto b/paddle/fluid/framework/framework.proto
index 8517d01cfede35c2fdff80a1446c3b3923d543ae..460401df5473f8650f450a2bd247a703d91b6048 100644
--- a/paddle/fluid/framework/framework.proto
+++ b/paddle/fluid/framework/framework.proto
@@ -21,7 +21,7 @@ package paddle.framework.proto;
 //
 // Serailization and Deserialization codes should be modified in a way
 // that supports old versions following the version and compatibility policy.
-message Version { optional int64 version = 1 [ default = -1 ]; }
+message Version { optional int64 version = 1 [ default = 0 ]; }
 
 enum AttrType {
   INT = 0;
diff --git a/paddle/fluid/inference/io.cc b/paddle/fluid/inference/io.cc
index fa59cca38341aecdd72714ba728da9a06bb29df3..1d20643ce01389b65085f6a215ec648b293c1001 100644
--- a/paddle/fluid/inference/io.cc
+++ b/paddle/fluid/inference/io.cc
@@ -125,7 +125,8 @@ std::unique_ptr<framework::ProgramDesc> Load(framework::Executor* executor,
 
   std::unique_ptr<framework::ProgramDesc> main_program(
       new framework::ProgramDesc(program_desc_str));
-  PADDLE_ENFORCE(framework::IsProgramVersionSupported(main_program->Version()));
+  PADDLE_ENFORCE(framework::IsProgramVersionSupported(main_program->Version()),
+                 "model version %d is not supported.", main_program->Version());
 
   LoadPersistables(executor, scope, *main_program, dirname, "");
   return main_program;
@@ -140,7 +141,8 @@ std::unique_ptr<framework::ProgramDesc> Load(
 
   std::unique_ptr<framework::ProgramDesc> main_program(
       new framework::ProgramDesc(program_desc_str));
-  PADDLE_ENFORCE(framework::IsProgramVersionSupported(main_program->Version()));
+  PADDLE_ENFORCE(framework::IsProgramVersionSupported(main_program->Version()),
+                 "model version %d is not supported.", main_program->Version());
 
   LoadPersistables(executor, scope, *main_program, "", param_filename);
   return main_program;