diff --git a/lib/matplotlib/backends/backend_qt4.py b/lib/matplotlib/backends/backend_qt4.py
index 3caad0bf90c1..53b7210489d2 100644
--- a/lib/matplotlib/backends/backend_qt4.py
+++ b/lib/matplotlib/backends/backend_qt4.py
@@ -1,6 +1,7 @@
from __future__ import division, print_function
import math
import os
+import re
import signal
import sys
@@ -53,6 +54,13 @@ def _create_qApp():
global qApp
app = QtGui.QApplication.instance()
if app is None:
+
+ # check for DISPLAY env variable on X11 build of Qt
+ if hasattr(QtGui, "QX11Info"):
+ display = os.environ.get('DISPLAY')
+ if display is None or not re.search(':\d', display):
+ raise RuntimeError('Invalid DISPLAY variable')
+
qApp = QtGui.QApplication( [" "] )
QtCore.QObject.connect( qApp, QtCore.SIGNAL( "lastWindowClosed()" ),
qApp, QtCore.SLOT( "quit()" ) )
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