diff --git a/processing/pre/geom_toTable.py b/processing/pre/geom_toTable.py
index eb6bdde61..a29ef7afb 100755
--- a/processing/pre/geom_toTable.py
+++ b/processing/pre/geom_toTable.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.7
+#!/usr/bin/env python3
 # -*- coding: UTF-8 no BOM -*-
 
 import os,sys
@@ -48,11 +48,11 @@ for name in filenames:
   table.head_read()
   info,extra_header = table.head_getGeom()
   
-  damask.util.croak(['grid     a b c:  %s'%(' x '.join(map(str,info['grid']))),
-                     'size     x y z:  %s'%(' x '.join(map(str,info['size']))),
-                     'origin   x y z:  %s'%(' : '.join(map(str,info['origin']))),
-                     'homogenization:  %i'%info['homogenization'],
-                     'microstructures: %i'%info['microstructures'],
+  damask.util.croak(['grid     a b c:  {}'.format(' x '.join(list(map(str,info['grid'])))),
+                     'size     x y z:  {}'.format(' x '.join(list(map(str,info['size'])))),
+                     'origin   x y z:  {}'.format(' : '.join(list(map(str,info['origin'])))),
+                     'homogenization:  {}'.format(info['homogenization']),
+                     'microstructures: {}'.format(info['microstructures']),
                     ])
 
   errors = []