diff --git a/lite/demo/python/mobilenetv1_full_api.py b/lite/demo/python/mobilenetv1_full_api.py
index c3a6bd077be5978f1ecaf9b040b119e50117d62b..7d713dfeea2735c008c0870c6758bba3236ad506 100644
--- a/lite/demo/python/mobilenetv1_full_api.py
+++ b/lite/demo/python/mobilenetv1_full_api.py
@@ -20,9 +20,6 @@ from __future__ import division
 from __future__ import print_function
 
 import argparse
-import sys
-sys.path.append('../../python/lib')
-
 from paddlelite.lite import *
 
 # Command arguments
@@ -42,8 +39,8 @@ def RunModel(args):
         config.set_param_file(args.param_file)
     else:
         config.set_model_dir(args.model_dir)
-    # For x86, you can set places = [Place(TargetType.X86, PrecisionType.FP32)]
-    places = [Place(TargetType.ARM, PrecisionType.FP32)]
+    # For arm platform (armlinux), you can set places = [Place(TargetType.ARM, PrecisionType.FP32)]
+    places = [Place(TargetType.X86, PrecisionType.FP32)]
     config.set_valid_places(places)
 
     # 2. Create paddle predictor
diff --git a/lite/demo/python/mobilenetv1_light_api.py b/lite/demo/python/mobilenetv1_light_api.py
index 5847c7819366b654dd9d5b5cbe2108b54da7b04c..a3e2db6c0df382b96cddfd5578e295fc7d47a357 100644
--- a/lite/demo/python/mobilenetv1_light_api.py
+++ b/lite/demo/python/mobilenetv1_light_api.py
@@ -20,8 +20,6 @@ from __future__ import division
 from __future__ import print_function
 
 import argparse
-import sys
-sys.path.append('../../python/lib')
 
 from paddlelite.lite import *
 
@@ -33,7 +31,7 @@ parser.add_argument(
 def RunModel(args):
     # 1. Set config information
     config = MobileConfig()
-    config.set_model_dir(args.model_dir)
+    config.set_model_from_file(args.model_dir)
 
     # 2. Create paddle predictor
     predictor = create_paddle_predictor(config)