diff --git a/plugin/vim-tmux-runner.vim b/plugin/vim-tmux-runner.vim
index f9b677e..1f9c6b4 100644
--- a/plugin/vim-tmux-runner.vim
+++ b/plugin/vim-tmux-runner.vim
@@ -43,8 +43,7 @@ endfunction
 
 function! s:ValidRunnerPaneSet()
     if !exists("s:runner_pane")
-        call s:EchoError("No runner pane attached.")
-        return 0
+        call s:AttachToPane()
     endif
     if !s:ValidRunnerPaneNumber(s:runner_pane)
         call s:EchoError("Runner pane setting (" . s:runner_pane . ") is invalid. Please reattach.")