diff --git a/vimperator.vim b/vimperator.vim
index bb24be88..68f91458 100644
--- a/vimperator.vim
+++ b/vimperator.vim
@@ -26,10 +26,10 @@ syn keyword vimperatorCommand ab[breviate] ab[clear] addo[ns] au[tocmd] b[uffer]
 	\ fw h[elp] ha[rdcopy] hist[ory] hs ia[bbrev] iabc[lear] im[ap] imapc[lear] ino[remap] iuna[bbrev] iu[nmap] javas[cript]
 	\ js let ls macros ma[rk] map mapc[lear] marks mkv[imperatorrc] no[remap] noh[lsearch] norm[al] o[pen] pa[geinfo] pc[lose]
 	\ pl[ay] pref[erences] prefs pwd q[uit] qa[ll] qma[rk] qmarks quita[ll] re[draw] re[load] reloada[ll] res[tart] run
-	\ sav[eas] sb[ar] sb[open] sbcl[ose] se[t] sideb[ar] so[urce] st[op] tN[ext] t[open] tab tabN[ext] tabc[lose] tabe[dit]
-	\ tabfir[st] tabl[ast] tabm[ove] tabn[ext] tabnew tabo[nly] tabopen tabp[revious] tabr[ewind] tabs time tn[ext]
-	\ tp[revious] u[ndo] una[bbreviate] undoa[ll] unl[et] unm[ap] ve[rsion] vie[wsource] viu[sage] w[rite] wc[lose] win[open]
-	\ winc[lose] wine[dit] wo[pen] wqa[ll] wq xa[ll] zo[om]
+    \ sav[eas] sb[ar] sb[open] sbcl[ose] se[t] sideb[ar] so[urce] st[op] tN[ext] t[open] tab tabd[uplicate] tabN[ext] tabc[lose]
+    \ tabe[dit] tabfir[st] tabl[ast] tabm[ove] tabn[ext] tabnew tabo[nly] tabopen tabp[revious] tabr[ewind] tabs time tn[ext]
+    \ tp[revious] u[ndo] una[bbreviate] undoa[ll] unl[et] unm[ap] ve[rsion] vie[wsource] viu[sage] w[rite] wc[lose] win[open]
+    \ winc[lose] wine[dit] wo[pen] wqa[ll] wq xa[ll] zo[om]
 	\ contained
 
 syn match vimperatorCommand "!" contained