diff --git a/pyqtgraph/opengl/GLViewWidget.py b/pyqtgraph/opengl/GLViewWidget.py
index 098d7ce9..add02496 100644
--- a/pyqtgraph/opengl/GLViewWidget.py
+++ b/pyqtgraph/opengl/GLViewWidget.py
@@ -314,7 +314,7 @@ class GLViewWidget(QtWidgets.QOpenGLWidget):
         center = self.opts['center']
         dist = self.opts['distance']
         if self.opts['rotationMethod'] == "quaternion":
-            pos = center - self.opts['rotation'].rotatedVector( Vector(0,0,dist) )
+            pos = Vector(center - self.opts['rotation'].rotatedVector(Vector(0,0,dist) ))
         else:
             # using 'euler' rotation method
             elev = radians(self.opts['elevation'])