diff --git a/plugin/vim-tmux-runner.vim b/plugin/vim-tmux-runner.vim
index f12ea53..19e4a1f 100644
--- a/plugin/vim-tmux-runner.vim
+++ b/plugin/vim-tmux-runner.vim
@@ -24,7 +24,7 @@ function! s:OpenRunnerPane()
 endfunction
 
 function! s:KillRunnerPane()
-    call s:CallTmuxCommand("kill-pane -t " . s:cached_runner_pane)
+    call s:CallTargetedTmuxCommand("kill-pane", s:cached_runner_pane)
     unlet s:cached_runner_pane
 endfunction
 
@@ -42,7 +42,7 @@ function! s:TmuxPanes()
 endfunction
 
 function! s:FocusTmuxPane(pane_number)
-    call s:CallTmuxCommand("select-pane -t " . a:pane_number)
+    call s:CallTargetedTmuxCommand("select-pane", a:pane_number)
 endfunction
 
 function! s:FocusRunnerPane()
@@ -54,6 +54,11 @@ function! s:CallTmuxCommand(command)
     return system(prexied_command)
 endfunction
 
+function! s:CallTargetedTmuxCommand(command, target_pane)
+    let targeted_command = a:command . " -t " . a:target_pane
+    call s:CallTmuxCommand(targeted_command)
+endfunction
+
 command! VTROpenRunner :call s:OpenRunnerPane()
 command! VTRKillRunner :call s:KillRunnerPane()
 command! VTRFocusRunnerPane :call s:FocusRunnerPane()