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-rw-r--r--content_scripts/scroller.coffee2
1 files changed, 1 insertions, 1 deletions
diff --git a/content_scripts/scroller.coffee b/content_scripts/scroller.coffee
index e2e05722..f65062e4 100644
--- a/content_scripts/scroller.coffee
+++ b/content_scripts/scroller.coffee
@@ -95,7 +95,7 @@ findScrollableElement = (element, direction, amount, factor) ->
# On some pages, the scrolling element is not actually scrollable. Here, we search the document for the
# largest visible element which does scroll vertically. This is used to initialize activatedElement. See
# #1358.
-firstScrollableElement = (element) ->
+firstScrollableElement = (element = null) ->
unless element
scrollingElement = getScrollingElement()
if doesScroll(scrollingElement, "y", 1, 1) or doesScroll(scrollingElement, "y", -1, 1)