diff --git a/plater.py b/plater.py
index 469eeb2..bfcc975 100755
--- a/plater.py
+++ b/plater.py
@@ -15,12 +15,14 @@
 # You should have received a copy of the GNU General Public License
 # along with Printrun.  If not, see <http://www.gnu.org/licenses/>.
 
+import os
 import sys
 import wx
 
 from printrun.stlplater import StlPlater
 
 if __name__ == '__main__':
+    os.environ['GDK_BACKEND'] = 'x11'
     app = wx.App(False)
     main = StlPlater(filenames = sys.argv[1:])
     main.Show()
diff --git a/pronterface.py b/pronterface.py
index dbe295a..4152288 100755
--- a/pronterface.py
+++ b/pronterface.py
@@ -15,6 +15,7 @@
 # You should have received a copy of the GNU General Public License
 # along with Printrun.  If not, see <http://www.gnu.org/licenses/>.
 
+import os
 import sys
 
 try:
@@ -32,6 +33,7 @@ not yet available for python3. You should try running with python2 instead.""")
 from printrun.pronterface import PronterApp
 
 if __name__ == '__main__':
+    os.environ['GDK_BACKEND'] = 'x11'
     app = PronterApp(False)
     try:
         app.MainLoop()