diff --git a/decocare/history.py b/decocare/history.py
index ab6aec9..acbfcaf 100644
--- a/decocare/history.py
+++ b/decocare/history.py
@@ -415,19 +415,6 @@ def decode_wizard_settings (data, num=8, model=None):
   , _head = "{0:#010b} {1:#010b}".format(*head)
   )
 
-def decode_carb_ratios (data):
-  ratios = [ ]
-  for x in range(8):
-    start = x * 3
-    end = start + 3
-    (offset, q, r) = data[start:end]
-    ratio = r/10.0
-    if q:
-      ratio = lib.BangInt([q, r]) / 1000.0
-    ratios.append(dict(i=x, offset=offset*30, q=q, _offset=offset,
-                       ratio=ratio, r=r))
-  return ratios
-
 def decode_insulin_sensitivies (data):
   sensitivities = [ ]
   for x in range(8):