diff --git a/src/pyj/select.pyj b/src/pyj/select.pyj
index ef0aa7c8eb..535e38afc2 100644
--- a/src/pyj/select.pyj
+++ b/src/pyj/select.pyj
@@ -124,11 +124,11 @@ def range_extents(q, in_flow_mode):
                 if boundary_node:
                     if boundary_node.nodeType is Node.TEXT_NODE:
                         if is_start:
-                            r.setStart(boundary_node, boundary_node.length - 1)
-                            r.setEnd(boundary_node, boundary_node.length)
-                        else:
                             r.setStart(boundary_node, 0)
-                            r.setEnd(boundary_node, 1)
+                            r.setEnd(boundary_node, 0)
+                        else:
+                            r.setStart(boundary_node, boundary_node.length)
+                            r.setEnd(boundary_node, boundary_node.length)
                         rect = r.getBoundingClientRect()
                     else:
                         rect = boundary_node.getBoundingClientRect()