diff --git a/runtime/syntax/bzr.vim b/runtime/syntax/bzr.vim
index ef5445b..11450ba 100644
--- a/runtime/syntax/bzr.vim
+++ b/runtime/syntax/bzr.vim
@@ -11,11 +11,8 @@
 "    Gioele Barabucci
 "       for idea of diff highlighting
 
-" For version 5.x: Clear all syntax items.
-" For version 6.x: Quit when a syntax file was already loaded.
-if version < 600
-  syntax clear
-elseif exists("b:current_syntax")
+" quit when a syntax file was already loaded.
+if exists("b:current_syntax")
   finish
 endif
 
@@ -40,24 +37,16 @@
 syn sync match bzrSync  grouphere bzrRegion "^-\{14} This line and the following will be ignored -\{14}$"me=s-1
 
 " Define the default highlighting.
-" For version 5.7 and earlier: only when not done already.
-" For version 5.8 and later: only when an item doesn't have highlighting yet.
-if version >= 508 || !exists("did_bzr_syn_inits")
-  if version <= 508
-    let did_bzr_syn_inits = 1
-    command -nargs=+ HiLink hi link <args>
-  else
-    command -nargs=+ HiLink hi def link <args>
-  endif
+" Only when an item doesn't have highlighting yet.
+command -nargs=+ HiLink hi def link <args>
 
-  HiLink bzrRemoved    Constant
-  HiLink bzrAdded      Identifier
-  HiLink bzrModified   Special
-  HiLink bzrRenamed    Special
-  HiLink bzrUnchanged  Special
-  HiLink bzrUnknown    Special
+HiLink bzrRemoved    Constant
+HiLink bzrAdded      Identifier
+HiLink bzrModified   Special
+HiLink bzrRenamed    Special
+HiLink bzrUnchanged  Special
+HiLink bzrUnknown    Special
 
-  delcommand HiLink
-endif
+delcommand HiLink
 
 let b:current_syntax = "bzr"