diff --git a/lua/snacks/input.lua b/lua/snacks/input.lua
index fccdd430..e6eee38d 100644
--- a/lua/snacks/input.lua
+++ b/lua/snacks/input.lua
@@ -291,7 +291,7 @@ end
 function M.complete(findstart, base)
   local completion = ctx.opts.completion
   if findstart == 1 then
-    return 0
+    return #ctx.win:text():gsub("%S+$", "")
   end
   if not completion then
     return {}