1 files changed, 5 insertions, 8 deletions

diff --git a/glucometerutils/exceptions.py b/glucometerutils/exceptions.py
index 00c9e91..1acf9a4 100644
--- a/glucometerutils/exceptions.py
+++ b/glucometerutils/exceptions.py
@@ -9,22 +9,19 @@ __license__ = 'GPL v3 or later'
 class Error(Exception):
   """Base class for the errors."""
 
+  def __str__(self):
+    return self.message
+
 
 class InvalidResponse(Error):
   """The response received from the meter was not understood"""
 
   def __init__(self, response):
-    self.response = response
-
-  def __str__(self):
-    return 'Invalid response received:\n%s' % self.response
+    self.message = 'Invalid response received:\n%s' % response
 
 
 class InvalidGlucoseUnit(Error):
   """Unable to parse the given glucose unit"""
 
   def __init__(self, unit):
-    self.unit = unit
-
-  def __str__(self):
-    return 'Invalid glucose unit received:\n%s' % self.unit
+    self.message = 'Invalid glucose unit received:\n%s' % unit