diff --git a/lib/matplotlib/backends/backend_qt5.py b/lib/matplotlib/backends/backend_qt5.py
index 0f23b12462a2..71fe6ef61de2 100644
--- a/lib/matplotlib/backends/backend_qt5.py
+++ b/lib/matplotlib/backends/backend_qt5.py
@@ -130,7 +130,15 @@ def _create_qApp():
app = QtWidgets.QApplication.instance()
if app is None:
# check for DISPLAY env variable on X11 build of Qt
- if hasattr(QtGui, "QX11Info"):
+ if is_pyqt5():
+ try:
+ from PyQt5 import QtX11Extras
+ is_x11_build = True
+ except ImportError:
+ is_x11_build = False
+ else:
+ is_x11_build = hasattr(QtGui, "QX11Info")
+ if is_x11_build:
display = os.environ.get('DISPLAY')
if display is None or not re.search(r':\d', display):
raise RuntimeError('Invalid DISPLAY variable')
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