diff --git a/runtime/syntax/lhaskell.vim b/runtime/syntax/lhaskell.vim
index 077549a..7820781 100644
--- a/runtime/syntax/lhaskell.vim
+++ b/runtime/syntax/lhaskell.vim
@@ -36,11 +36,8 @@
 "
 
 
-" 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
 
@@ -84,15 +81,10 @@
 
 " If user wants us to highlight TeX syntax or guess thinks it's TeX, read it.
 if b:lhs_markup == "tex"
-    if version < 600
-	source <sfile>:p:h/tex.vim
-	set isk+=_
-    else
-	runtime! syntax/tex.vim
-	unlet b:current_syntax
-	" Tex.vim removes "_" from 'iskeyword', but we need it for Haskell.
-	setlocal isk+=_
-    endif
+    runtime! syntax/tex.vim
+    unlet b:current_syntax
+    " Tex.vim removes "_" from 'iskeyword', but we need it for Haskell.
+    setlocal isk+=_
     syntax cluster lhsTeXContainer contains=tex.*Zone,texAbstract
 else
     syntax cluster lhsTeXContainer contains=.*
@@ -100,11 +92,7 @@
 
 " Literate Haskell is Haskell in between text, so at least read Haskell
 " highlighting
-if version < 600
-    syntax include @haskellTop <sfile>:p:h/haskell.vim
-else
-    syntax include @haskellTop syntax/haskell.vim
-endif
+syntax include @haskellTop syntax/haskell.vim
 
 syntax region lhsHaskellBirdTrack start="^>" end="\%(^[^>]\)\@=" contains=@haskellTop,lhsBirdTrack containedin=@lhsTeXContainer
 syntax region lhsHaskellBeginEndBlock start="^\\begin{code}\s*$" matchgroup=NONE end="\%(^\\end{code}.*$\)\@=" contains=@haskellTop,beginCodeBegin containedin=@lhsTeXContainer
@@ -115,23 +103,15 @@
 syntax region beginCodeCode  matchgroup=texDelimiter start="{" end="}"
 
 " 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_tex_syntax_inits")
-  if version < 508
-    let did_tex_syntax_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 lhsBirdTrack Comment
+HiLink lhsBirdTrack Comment
 
-  HiLink beginCodeBegin	      texCmdName
-  HiLink beginCodeCode	      texSection
+HiLink beginCodeBegin	      texCmdName
+HiLink beginCodeCode	      texSection
 
-  delcommand HiLink
-endif
+delcommand HiLink
 
 " Restore cursor to original position, as it may have been disturbed
 " by the searches in our guessing code