diff --git a/runtime/syntax/opl.vim b/runtime/syntax/opl.vim
index 1b07e35..8959cf6 100644
--- a/runtime/syntax/opl.vim
+++ b/runtime/syntax/opl.vim
@@ -6,11 +6,8 @@
 
 " Open Psion Language... (EPOC16/EPOC32)
 
-" 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
 
@@ -75,25 +72,17 @@
 syn match   OPLMathsOperator    "-\|=\|[:<>+\*^/\\]"
 
 " 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_OPL_syntax_inits")
-  if version < 508
-    let did_OPL_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 OPLStatement		Statement
-  HiLink OPLNumber		Number
-  HiLink OPLString		String
-  HiLink OPLComment		Comment
-  HiLink OPLMathsOperator	Conditional
+HiLink OPLStatement		Statement
+HiLink OPLNumber		Number
+HiLink OPLString		String
+HiLink OPLComment		Comment
+HiLink OPLMathsOperator	Conditional
 "  HiLink OPLError		Error
 
-  delcommand HiLink
-endif
+delcommand HiLink
 
 let b:current_syntax = "opl"