diff --git a/openlp/core/ui/listpreviewwidget.py b/openlp/core/ui/listpreviewwidget.py
index 005083d65..656e1c66a 100644
--- a/openlp/core/ui/listpreviewwidget.py
+++ b/openlp/core/ui/listpreviewwidget.py
@@ -199,7 +199,7 @@ class ListPreviewWidget(QtWidgets.QTableWidget, RegistryProperties):
         # Check if auto-scroll disabled (None) and validate value as dict containing 'dist' and 'pos'
         # 'dist' represents the slide to scroll to relative to the new slide (-1 = previous, 0 = current, 1 = next)
         # 'pos' represents the vert position of of the slide (0 = in view, 1 = top, 2 = middle, 3 = bottom)
-        if (not isinstance(autoscrolling, dict)) or ('dist' not in autoscrolling) or ('pos' not in autoscrolling):
+        if not isinstance(autoscrolling, dict) or 'dist' not in autoscrolling or 'pos' not in autoscrolling:
             return
         # prevent scrolling past list bounds
         scroll_to_slide = slide + autoscrolling['dist']