diff --git a/data/core/commands/doc.lua b/data/core/commands/doc.lua
index 365c0d19..3ddb7f16 100644
--- a/data/core/commands/doc.lua
+++ b/data/core/commands/doc.lua
@@ -538,7 +538,7 @@ local commands = {
 }
 
 command.add(function(x, y)
-  if x == nil or y == nil or not core.active_view:is(DocView) then return false end
+  if x == nil or y == nil or not core.active_view:extends(DocView) then return false end
   local dv = core.active_view
   local x1,y1,x2,y2 = dv.position.x, dv.position.y, dv.position.x + dv.size.x, dv.position.y + dv.size.y
   return x >= x1 + dv:get_gutter_width() and x < x2 and y >= y1 and y < y2, dv, x, y