diff --git a/src/pyj/read_book/iframe.pyj b/src/pyj/read_book/iframe.pyj
index c12b0e0796..357982c977 100644
--- a/src/pyj/read_book/iframe.pyj
+++ b/src/pyj/read_book/iframe.pyj
@@ -97,9 +97,9 @@ class IframeBoss:
         window.onerror = self.onerror
         window.addEventListener('scroll', debounce(self.onscroll, 1000))
         window.addEventListener('resize', debounce(self.onresize, 500))
-        window.addEventListener('wheel', self.onwheel)
-        window.addEventListener('keydown', self.onkeydown)
-        document.documentElement.addEventListener('contextmenu', self.oncontextmenu)
+        window.addEventListener('wheel', self.onwheel, {'passive': False})
+        window.addEventListener('keydown', self.onkeydown, {'passive': False})
+        document.documentElement.addEventListener('contextmenu', self.oncontextmenu, {'passive': False})
         self.color_scheme = data.color_scheme
         create_touch_handlers()
 
diff --git a/src/pyj/read_book/paged_mode.pyj b/src/pyj/read_book/paged_mode.pyj
index 8fc81a075d..69b25d73ba 100644
--- a/src/pyj/read_book/paged_mode.pyj
+++ b/src/pyj/read_book/paged_mode.pyj
@@ -212,9 +212,12 @@ def layout(is_single_page):
             is_full_screen_layout = True
 
         # Prevent the TAB key from shifting focus as it causes partial scrolling
-        document.documentElement.addEventListener('keydown', def (evt):
-            if get_key(evt) is 'tab':
-                evt.preventDefault()
+        document.documentElement.addEventListener(
+            'keydown',
+            def (evt):
+                if get_key(evt) is 'tab':
+                    evt.preventDefault()
+            , {'passive': False}
         )
 
     # Some browser engine, WebKit at least, adjust column widths to please