diff --git a/tools/analysis/TS_drift.py b/tools/analysis/TS_drift.py
index 8570b7e6a2..41931e8508 100755
--- a/tools/analysis/TS_drift.py
+++ b/tools/analysis/TS_drift.py
@@ -56,14 +56,14 @@ def main(cmdLineArgs,stream=None):
   else: objOut = cmdLineArgs.outdir+'/T_drift.png'
   m6plot.ztplot( T, timeT, zt, splitscale=[0., -1000., -6500.],
       suptitle=suptitle, title='Potential Temperature [C]',
-      extend='both', colormap='dunnePM', centered=True,
+      extend='both', colormap='dunnePM', autocenter=True,
       save=objOut)
 
   if stream != None: objOut = stream[1]
   else: objOut = cmdLineArgs.outdir+'/S_drift.png'
   m6plot.ztplot( S, timeS, zt, splitscale=[0., -1000., -6500.],
       suptitle=suptitle, title='Salinity [psu]',
-      extend='both', colormap='dunnePM', centered=True,
+      extend='both', colormap='dunnePM', autocenter=True,
       save=objOut)
 
 if __name__ == '__main__':