diff --git a/src/pyj/read_book/iframe.pyj b/src/pyj/read_book/iframe.pyj
index cf0f35e90d..d019d372b6 100644
--- a/src/pyj/read_book/iframe.pyj
+++ b/src/pyj/read_book/iframe.pyj
@@ -534,7 +534,7 @@ class IframeBoss:
         self.send_message(
             'selectionchange', text=text, empty=v'!!collapsed', annot_id=annot_id,
             drag_mouse_position=drag_mouse_position, selection_change_caused_by_search=by_search,
-            selection_extents=selection_extents(current_layout_mode() is 'flow', True))
+            selection_extents=selection_extents(current_layout_mode() is 'flow'))
 
     def onresize_stage2(self):
         if scroll_viewport.width() is self.last_window_width and scroll_viewport.height() is self.last_window_height:
@@ -556,7 +556,7 @@ class IframeBoss:
         if sel and not sel.isCollapsed:
             # update_selection_position has probably already been called by
             # no_latency_onscroll but make sure
-            self.send_message('update_selection_position', selection_extents=selection_extents(current_layout_mode() is 'flow', True))
+            self.send_message('update_selection_position', selection_extents=selection_extents(current_layout_mode() is 'flow'))
 
     def received_window_size(self, data):
         scroll_viewport.update_window_size(data.width, data.height)
diff --git a/src/pyj/select.pyj b/src/pyj/select.pyj
index c3293d0333..bb83045145 100644
--- a/src/pyj/select.pyj
+++ b/src/pyj/select.pyj
@@ -51,12 +51,12 @@ def empty_range_extents():
     }
 
 
-def range_extents(start, end, in_flow_mode):
+def range_extents(q, in_flow_mode):
     ans = empty_range_extents()
-    if not start or not end:
+    if not q:
         return ans
-    start = start.cloneRange()
-    end = end.cloneRange()
+    start = q.cloneRange()
+    end = q.cloneRange()
     start.collapse(True)
     end.collapse(False)
 
@@ -94,21 +94,11 @@ def range_extents(start, end, in_flow_mode):
 
 
 
-def selection_extents(in_flow_mode, end_must_be_focus):
+def selection_extents(in_flow_mode):
     sel = window.getSelection()
     if not sel or not sel.rangeCount or sel.isCollapsed:
         return empty_range_extents()
-    if end_must_be_focus:
-        start = document.createRange()
-        start.setStart(sel.anchorNode, sel.anchorOffset)
-        start.setEnd(sel.anchorNode, sel.anchorOffset)
-        end = document.createRange()
-        end.setStart(sel.focusNode, sel.focusOffset)
-        end.setEnd(sel.focusNode, sel.focusOffset)
-    else:
-        start = sel.getRangeAt(0)
-        end = sel.getRangeAt(sel.rangeCount - 1)
-    return range_extents(start, end, in_flow_mode)
+    return range_extents(sel.getRangeAt(0), in_flow_mode)
 
 
 def range_at_limit(invert_x, invert_y):