diff --git a/ereuse_devicehub/resources/device/models.py b/ereuse_devicehub/resources/device/models.py
index 0703359d..56fd6de9 100644
--- a/ereuse_devicehub/resources/device/models.py
+++ b/ereuse_devicehub/resources/device/models.py
@@ -1076,13 +1076,13 @@ class Mobile(Device):
 
     @validates('imei')
     def validate_imei(self, _, value: int):
-        if not imei.is_valid(str(value)):
+        if value and not imei.is_valid(str(value)):
             raise ValidationError('{} is not a valid imei.'.format(value))
         return value
 
     @validates('meid')
     def validate_meid(self, _, value: str):
-        if not meid.is_valid(value):
+        if value and not meid.is_valid(value):
             raise ValidationError('{} is not a valid meid.'.format(value))
         return value
 
diff --git a/ereuse_devicehub/resources/device/schemas.py b/ereuse_devicehub/resources/device/schemas.py
index f1e22d51..2cc8e65d 100644
--- a/ereuse_devicehub/resources/device/schemas.py
+++ b/ereuse_devicehub/resources/device/schemas.py
@@ -291,8 +291,7 @@ class Mobile(Device):
     @pre_load
     def convert_check_imei(self, data):
         if data.get('imei', None):
-            # data['imei'] = int(imei.validate(data['imei']))
-            data['imei'] = int(data['imei'])
+            data['imei'] = int(imei.validate(data['imei']))
         return data
 
     @pre_load