diff --git a/gridded/da/baseclasses/optimizer.py b/gridded/da/baseclasses/optimizer.py
index 552e76645eed9fa9c48f8ac0642673cbdf507c94..2909cf03b933741425872882daf88b1a2fa5f811 100755
--- a/gridded/da/baseclasses/optimizer.py
+++ b/gridded/da/baseclasses/optimizer.py
@@ -284,13 +284,13 @@ class Optimizer(object):
             savedict['comment'] = 'Flag (0/1/2/99) for observation value, 0 means okay, 1 means QC error, 2 means rejected, 99 means not sampled'
             f.add_data(savedict)
 
-            savedict = io.std_savedict.copy()
-            savedict['name'] = "kalmangainmatrix"
-            savedict['long_name'] = "kalmangainmatrix"
-            savedict['units'] = "unitless molefraction-1"
-            savedict['dims'] = dimstate + dimobs
-            savedict['values'] = self.KG.tolist()
-            savedict['comment'] = 'Kalman gain matrix of all obs and state vector elements'
+            #savedict = io.std_savedict.copy()
+            #savedict['name'] = "kalmangainmatrix"
+            #savedict['long_name'] = "kalmangainmatrix"
+            #savedict['units'] = "unitless molefraction-1"
+            #savedict['dims'] = dimstate + dimobs
+            #savedict['values'] = self.KG.tolist()
+            #savedict['comment'] = 'Kalman gain matrix of all obs and state vector elements'
             #dummy                   = f.add_data(savedict)
 
         f.close()