diff --git a/src/mcedit2/worldview/worldview.py b/src/mcedit2/worldview/worldview.py
index df5f870..9884c8f 100644
--- a/src/mcedit2/worldview/worldview.py
+++ b/src/mcedit2/worldview/worldview.py
@@ -189,7 +189,7 @@ class WorldView(QGLWidget):
         self.setDimension(dimension)
 
     def waitForSwapThread(self):
-        while not self.shouldRender:
+        while not self.bufferSwapDone:
             QtGui.QApplication.processEvents(QtCore.QEventLoop.ExcludeUserInputEvents)