diff --git a/runtime/syntax/plsql.vim b/runtime/syntax/plsql.vim
index 6e51366..173c22f 100644
--- a/runtime/syntax/plsql.vim
+++ b/runtime/syntax/plsql.vim
@@ -9,11 +9,8 @@
 "	   Austin Ziegler (austin at halostatue dot ca)
 "		Added 8i+ features.
 "
-" 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
 
@@ -223,54 +220,46 @@
 syn sync minlines=10 maxlines=100
 
 " Define the default highlighting.
-" For version 5.x 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_plsql_syn_inits")
-  if version < 508
-    let did_plsql_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 plsqlAttribute		Macro
-  HiLink plsqlBlockError	Error
-  HiLink plsqlBooleanLiteral	Boolean
-  HiLink plsqlCharLiteral	Character
-  HiLink plsqlComment		Comment
-  HiLink plsqlCommentL		Comment
-  HiLink plsqlConditional	Conditional
-  HiLink plsqlError		Error
-  HiLink plsqlErrInBracket	Error
-  HiLink plsqlErrInBlock	Error
-  HiLink plsqlErrInParen	Error
-  HiLink plsqlException		Function
-  HiLink plsqlFloatLiteral	Float
-  HiLink plsqlFunction		Function
-  HiLink plsqlGarbage		Error
-  HiLink plsqlHostIdentifier	Label
-  HiLink plsqlIdentifier	Normal
-  HiLink plsqlIntLiteral	Number
-  HiLink plsqlOperator		Operator
-  HiLink plsqlParen		Normal
-  HiLink plsqlParenError	Error
-  HiLink plsqlSpaceError	Error
-  HiLink plsqlPseudo		PreProc
-  HiLink plsqlKeyword		Keyword
-  HiLink plsqlRepeat		Repeat
-  HiLink plsqlStorage		StorageClass
-  HiLink plsqlSQLKeyword	Function
-  HiLink plsqlStringError	Error
-  HiLink plsqlStringLiteral	String
-  HiLink plsqlCommentString	String
-  HiLink plsqlComment2String	String
-  HiLink plsqlSymbol		Normal
-  HiLink plsqlTrigger		Function
-  HiLink plsqlTypeAttribute	StorageClass
-  HiLink plsqlTodo		Todo
+HiLink plsqlAttribute		Macro
+HiLink plsqlBlockError	Error
+HiLink plsqlBooleanLiteral	Boolean
+HiLink plsqlCharLiteral	Character
+HiLink plsqlComment		Comment
+HiLink plsqlCommentL		Comment
+HiLink plsqlConditional	Conditional
+HiLink plsqlError		Error
+HiLink plsqlErrInBracket	Error
+HiLink plsqlErrInBlock	Error
+HiLink plsqlErrInParen	Error
+HiLink plsqlException		Function
+HiLink plsqlFloatLiteral	Float
+HiLink plsqlFunction		Function
+HiLink plsqlGarbage		Error
+HiLink plsqlHostIdentifier	Label
+HiLink plsqlIdentifier	Normal
+HiLink plsqlIntLiteral	Number
+HiLink plsqlOperator		Operator
+HiLink plsqlParen		Normal
+HiLink plsqlParenError	Error
+HiLink plsqlSpaceError	Error
+HiLink plsqlPseudo		PreProc
+HiLink plsqlKeyword		Keyword
+HiLink plsqlRepeat		Repeat
+HiLink plsqlStorage		StorageClass
+HiLink plsqlSQLKeyword	Function
+HiLink plsqlStringError	Error
+HiLink plsqlStringLiteral	String
+HiLink plsqlCommentString	String
+HiLink plsqlComment2String	String
+HiLink plsqlSymbol		Normal
+HiLink plsqlTrigger		Function
+HiLink plsqlTypeAttribute	StorageClass
+HiLink plsqlTodo		Todo
 
-  delcommand HiLink
-endif
+delcommand HiLink
 
 let b:current_syntax = "plsql"