diff --git a/runtime/syntax/progress.vim b/runtime/syntax/progress.vim
index 85a54a6..9ff5069 100644
--- a/runtime/syntax/progress.vim
+++ b/runtime/syntax/progress.vim
@@ -11,22 +11,15 @@
 " Version:              13
 " Last Change:		Nov 11 2012
 
-" For version 5.x: Clear all syntax item
-" 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
 
 let s:cpo_save = &cpo
 set cpo&vim
 
-if version >= 600
-  setlocal iskeyword=@,48-57,_,-,!,#,$,%
-else
-  set iskeyword=@,48-57,_,-,!,#,$,%
-endif
+setlocal iskeyword=@,48-57,_,-,!,#,$,%
 
 " The Progress editor doesn't cope with tabs very well.
 set expandtab
@@ -282,44 +275,36 @@
 syn sync lines=800
 
 " 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_progress_syntax_inits")
-	if version < 508
-		let did_progress_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>
 
-	" The default methods for highlighting. Can be overridden later.
-	HiLink ProgressByte		Number
-	HiLink ProgressCase		Repeat
-	HiLink ProgressComment		Comment
-	HiLink ProgressConditional	Conditional
-	HiLink ProgressDebug		Debug
-	HiLink ProgressDo		Repeat
-	HiLink ProgressEndError		Error
-	HiLink ProgressFor		Repeat
-	HiLink ProgressFunction		Procedure
-	HiLink ProgressIdentifier	Identifier
-	HiLink ProgressInclude		Include
-	HiLink ProgressMatrixDelimiter	Identifier
-	HiLink ProgressNumber		Number
-	HiLink ProgressOperator		Operator
-	HiLink ProgressPreProc		PreProc
-	HiLink ProgressProcedure	Procedure
-	HiLink ProgressQuote		Delimiter
-	HiLink ProgressRepeat		Repeat
-	HiLink ProgressReserved		Statement
-	HiLink ProgressSpaceError	Error
-	HiLink ProgressString		String
-	HiLink ProgressTodo		Todo
-	HiLink ProgressType		Statement
-	HiLink ProgressShowTab		Error
+" The default methods for highlighting. Can be overridden later.
+HiLink ProgressByte		Number
+HiLink ProgressCase		Repeat
+HiLink ProgressComment		Comment
+HiLink ProgressConditional	Conditional
+HiLink ProgressDebug		Debug
+HiLink ProgressDo		Repeat
+HiLink ProgressEndError		Error
+HiLink ProgressFor		Repeat
+HiLink ProgressFunction		Procedure
+HiLink ProgressIdentifier	Identifier
+HiLink ProgressInclude		Include
+HiLink ProgressMatrixDelimiter	Identifier
+HiLink ProgressNumber		Number
+HiLink ProgressOperator		Operator
+HiLink ProgressPreProc		PreProc
+HiLink ProgressProcedure	Procedure
+HiLink ProgressQuote		Delimiter
+HiLink ProgressRepeat		Repeat
+HiLink ProgressReserved		Statement
+HiLink ProgressSpaceError	Error
+HiLink ProgressString		String
+HiLink ProgressTodo		Todo
+HiLink ProgressType		Statement
+HiLink ProgressShowTab		Error
 
-	delcommand HiLink
-endif
+delcommand HiLink
 
 let b:current_syntax = "progress"