diff --git a/processing/pre/geom_rescale.py b/processing/pre/geom_rescale.py
index 48d26e8f5..2e4dfa2d9 100755
--- a/processing/pre/geom_rescale.py
+++ b/processing/pre/geom_rescale.py
@@ -3,7 +3,7 @@
 
 import os
 import sys
-import numpy as np
+from io import StringIO
 from optparse import OptionParser
 from scipy import ndimage
 import damask