diff --git a/qutebrowser/browser/webengine/webenginetab.py b/qutebrowser/browser/webengine/webenginetab.py
index 20c9ed30a..80e3558e4 100644
--- a/qutebrowser/browser/webengine/webenginetab.py
+++ b/qutebrowser/browser/webengine/webenginetab.py
@@ -233,9 +233,9 @@ class WebEngineScroller(browsertab.AbstractScroller):
             self._pos_px = QPoint(jsret['px']['x'], jsret['px']['y'])
 
             dx = jsret['scroll']['width'] - jsret['inner']['width']
-            perc_x = 0 if dx == 0 else 100 / dx * jsret['px']['x']
+            perc_x = 0 if dx == 0 else round(100 / dx * jsret['px']['x'])
             dy = jsret['scroll']['height'] - jsret['inner']['height']
-            perc_y = 0 if dy == 0 else 100 / dy * jsret['px']['y']
+            perc_y = 0 if dy == 0 else round(100 / dy * jsret['px']['y'])
 
             self._at_bottom = dy == jsret['px']['y']
             self._pos_perc = perc_x, perc_y