diff --git a/maix/version.py b/maix/version.py
index a1afd6ee..8a90a155 100644
--- a/maix/version.py
+++ b/maix/version.py
@@ -3,6 +3,6 @@
 
 version_major = 4
 version_minor = 4
-version_patch = 10
+version_patch = 11
 
 __version__ = "{}.{}.{}".format(version_major, version_minor, version_patch)
diff --git a/projects/app_face_recognizer/main.py b/projects/app_face_recognizer/main.py
index 1000c047..325fb9f0 100644
--- a/projects/app_face_recognizer/main.py
+++ b/projects/app_face_recognizer/main.py
@@ -5,6 +5,7 @@
 learn_id = 0
 
 def main(disp):
+    global pressed_flag, learn_id
     recognizer = nn.FaceRecognizer(detect_model="/root/models/retinaface.mud", feature_model = "/root/models/face_feature.mud")
 
     # if os.path.exists("/root/faces.bin"):