diff --git a/scripts/scil_dti_metrics.py b/scripts/scil_dti_metrics.py
index 5301fb05c..526c42573 100755
--- a/scripts/scil_dti_metrics.py
+++ b/scripts/scil_dti_metrics.py
@@ -41,7 +41,7 @@
 
 from scilpy.io.image import get_data_as_mask
 from scilpy.io.utils import (add_b0_thresh_arg, add_overwrite_arg,
-                             assert_inputs_exist,assert_outputs_exist,
+                             assert_inputs_exist, assert_outputs_exist,
                              add_verbose_arg)
 from scilpy.io.tensor import convert_tensor_from_dipy_format, \
     supported_tensor_formats, tensor_format_description