diff --git a/alarmdecoder/decoder.py b/alarmdecoder/decoder.py
index e16ff60..f377e57 100644
--- a/alarmdecoder/decoder.py
+++ b/alarmdecoder/decoder.py
@@ -13,7 +13,7 @@ from .event import event
 from .util import InvalidMessageError
 from .messages import Message, ExpanderMessage, RFMessage, LRRMessage
 from .zonetracking import Zonetracker
-from .panels import MODES, ADEMCO, DSC
+from .panels import PANEL_TYPES, ADEMCO, DSC
 
 
 class AlarmDecoder(object):
@@ -235,7 +235,7 @@ class AlarmDecoder(object):
                                ''.join(['Y' if r else 'N' for r in self.emulate_relay])))
         config_entries.append(('LRR', 'Y' if self.emulate_lrr else 'N'))
         config_entries.append(('DEDUPLICATE', 'Y' if self.deduplicate else 'N'))
-        config_entries.append(('MODE', MODES.keys()[MODES.values().index(self.mode)]))
+        config_entries.append(('MODE', PANEL_TYPES.keys()[PANEL_TYPES.values().index(self.mode)]))
 
         config_string = '&'.join(['='.join(t) for t in config_entries])
 
@@ -431,7 +431,7 @@ class AlarmDecoder(object):
             elif key == 'DEDUPLICATE':
                 self.deduplicate = (val == 'Y')
             elif key == 'MODE':
-                self.mode = MODES[val]
+                self.mode = PANEL_TYPES[val]
 
         self.on_config_received()
 
diff --git a/alarmdecoder/messages.py b/alarmdecoder/messages.py
index 4e5b5c5..de1d491 100644
--- a/alarmdecoder/messages.py
+++ b/alarmdecoder/messages.py
@@ -16,7 +16,7 @@ import re
 import datetime
 
 from .util import InvalidMessageError
-from .panels import MODES, ADEMCO, DSC
+from .panels import PANEL_TYPES, ADEMCO, DSC
 
 
 class BaseMessage(object):
@@ -163,8 +163,8 @@ class Message(BaseMessage):
         self.check_zone = is_bit_set(15)
         self.perimeter_only = is_bit_set(16)
         self.system_fault = is_bit_set(17)
-        if self.bitfield[18] in MODES.keys():
-            self.panel_type = MODES[self.bitfield[18]]
+        if self.bitfield[18] in PANEL_TYPES.keys():
+            self.panel_type = PANEL_TYPES[self.bitfield[18]]
         # pos 20-21 - Unused.
         self.text = alpha.strip('"')
 
diff --git a/alarmdecoder/panels.py b/alarmdecoder/panels.py
index 34a9b12..c1f981a 100644
--- a/alarmdecoder/panels.py
+++ b/alarmdecoder/panels.py
@@ -7,7 +7,7 @@ Representations of Panels and their templates.
 ADEMCO = 0
 DSC = 1
 
-MODES = {
+PANEL_TYPES = {
     'A': ADEMCO,
     'D': DSC,
 }