diff --git a/lua/telescope/pickers.lua b/lua/telescope/pickers.lua
index 7613daf..7d0efae 100644
--- a/lua/telescope/pickers.lua
+++ b/lua/telescope/pickers.lua
@@ -649,6 +649,8 @@ function Picker:refresh(finder, opts)
 end
 
 function Picker:set_selection(row)
+  if not self.manager then return end
+
   row = self.scroller(self.max_results, self.manager:num_results(), row)
 
   if not self:can_select_row(row) then