diff --git a/gprMax/geometry_views.py b/gprMax/geometry_views.py
index 687399b0..7dda8f52 100644
--- a/gprMax/geometry_views.py
+++ b/gprMax/geometry_views.py
@@ -16,7 +16,7 @@
 # You should have received a copy of the GNU General Public License
 # along with gprMax.  If not, see <http://www.gnu.org/licenses/>.
 
-import sys
+import os, sys
 import numpy as np
 from struct import pack