diff --git a/gpapi/config.py b/gpapi/config.py
index ea1a6f2..f31c103 100644
--- a/gpapi/config.py
+++ b/gpapi/config.py
@@ -29,6 +29,13 @@
 config.read(filepath)
 
 
+class InvalidLocaleError(Exception):
+    pass
+
+class InvalidTimezoneError(Exception):
+    pass
+
+
 def getDevicesCodenames():
     """Returns a list containing devices codenames"""
     return config.sections()
@@ -51,19 +58,19 @@ def __init__(self, device):
     def set_locale(self, locale):
         # test if provided locale is valid
         if locale is None or type(locale) is not str:
-            raise Exception('Wrong locale supplied')
+            raise InvalidLocaleError()
 
         # check if locale matches the structure of a common
         # value like "en_US"
         if match(r'[a-z]{2}\_[A-Z]{2}', locale) is None:
-            raise Exception('Wrong locale supplied')
+            raise InvalidLocaleError()
         self.locale = locale
 
     def set_timezone(self, timezone):
         if timezone is None or type(timezone) is not str:
             timezone = self.device.get('timezone')
             if timezone is None:
-                raise Exception('Wrong timezone supplied')
+                raise InvalidTimezoneError()
         self.timezone = timezone
 
     def getBaseHeaders(self):
diff --git a/gpapi/googleplay.py b/gpapi/googleplay.py
index 3c8fd9c..3882c84 100644
--- a/gpapi/googleplay.py
+++ b/gpapi/googleplay.py
@@ -53,6 +53,9 @@ def __init__(self, value):
     def __str__(self):
         return repr(self.value)
 
+class SecurityCheckError(Exception):
+    pass
+
 
 class GooglePlayAPI(object):
     """Google Play Unofficial API Class
@@ -217,9 +220,7 @@ def login(self, email=None, password=None, gsfId=None, authSubToken=None):
                 ac2dmToken = params["auth"]
             elif "error" in params:
                 if "NeedsBrowser" in params["error"]:
-                    raise LoginError("Security check is needed, try to visit "
-                                     "https://accounts.google.com/b/0/DisplayUnlockCaptcha "
-                                     "to unlock, or setup an app-specific password")
+                    raise SecurityCheckError()
                 raise LoginError("server says: " + params["error"])
             else:
                 raise LoginError("Auth token not found.")