diff --git a/runtime/syntax/spup.vim b/runtime/syntax/spup.vim
index a072629..e5f58be 100644
--- a/runtime/syntax/spup.vim
+++ b/runtime/syntax/spup.vim
@@ -204,65 +204,63 @@
 
 " Define the default highlighting.
 " Only when an item doesn't have highlighting yet
-command -nargs=+ HiLink hi def link <args>
 
-HiLink spupCdi	    spupSection
-HiLink spupConditions   spupSection
-HiLink spupDeclare	    spupSection
-HiLink spupEstimation   spupSection
-HiLink spupExternal	    spupSection
-HiLink spupFlowsheet    spupSection
-HiLink spupFunction	    spupSection
-HiLink spupGlobal	    spupSection
-HiLink spupHomotopy	    spupSection
-HiLink spupMacro	    spupSection
-HiLink spupModel	    spupSection
-HiLink spupOperation    spupSection
-HiLink spupOptions	    spupSection
-HiLink spupProcedure    spupSection
-HiLink spupProfiles	    spupSection
-HiLink spupReport	    spupSection
-HiLink spupTitle	    spupConstant  " this is correct, truly ;)
-HiLink spupUnit	    spupSection
+hi def link spupCdi	    spupSection
+hi def link spupConditions   spupSection
+hi def link spupDeclare	    spupSection
+hi def link spupEstimation   spupSection
+hi def link spupExternal	    spupSection
+hi def link spupFlowsheet    spupSection
+hi def link spupFunction	    spupSection
+hi def link spupGlobal	    spupSection
+hi def link spupHomotopy	    spupSection
+hi def link spupMacro	    spupSection
+hi def link spupModel	    spupSection
+hi def link spupOperation    spupSection
+hi def link spupOptions	    spupSection
+hi def link spupProcedure    spupSection
+hi def link spupProfiles	    spupSection
+hi def link spupReport	    spupSection
+hi def link spupTitle	    spupConstant  " this is correct, truly ;)
+hi def link spupUnit	    spupSection
 
-HiLink spupCdiSubs	      spupSubs
-HiLink spupConditionsSubs spupSubs
-HiLink spupDeclareSubs    spupSubs
-HiLink spupEstimationSubs spupSubs
-HiLink spupExternalSubs   spupSubs
-HiLink spupFlowsheetSubs  spupSubs
-HiLink spupFunctionSubs   spupSubs
-HiLink spupHomotopySubs   spupSubs
-HiLink spupMacroSubs      spupSubs
-HiLink spupModelSubs      spupSubs
-HiLink spupOperationSubs  spupSubs
-HiLink spupOptionsSubs    spupSubs
-HiLink spupProcedureSubs  spupSubs
-HiLink spupReportSubs     spupSubs
-HiLink spupUnitSubs	      spupSubs
+hi def link spupCdiSubs	      spupSubs
+hi def link spupConditionsSubs spupSubs
+hi def link spupDeclareSubs    spupSubs
+hi def link spupEstimationSubs spupSubs
+hi def link spupExternalSubs   spupSubs
+hi def link spupFlowsheetSubs  spupSubs
+hi def link spupFunctionSubs   spupSubs
+hi def link spupHomotopySubs   spupSubs
+hi def link spupMacroSubs      spupSubs
+hi def link spupModelSubs      spupSubs
+hi def link spupOperationSubs  spupSubs
+hi def link spupOptionsSubs    spupSubs
+hi def link spupProcedureSubs  spupSubs
+hi def link spupReportSubs     spupSubs
+hi def link spupUnitSubs	      spupSubs
 
-HiLink spupCode	       Normal
-HiLink spupComment	       Comment
-HiLink spupComment2	       spupComment
-HiLink spupConditional     Statement
-HiLink spupConstant	       Constant
-HiLink spupError	       Error
-HiLink spupHelp	       Normal
-HiLink spupIdentifier      Identifier
-HiLink spupNumber	       Constant
-HiLink spupOperator	       Special
-HiLink spupOpenBrace       spupError
-HiLink spupSection	       Statement
-HiLink spupSpecial	       spupTextprocGeneric
-HiLink spupStreams	       Type
-HiLink spupString	       Constant
-HiLink spupSubs	       Statement
-HiLink spupSymbol	       Special
-HiLink spupTextprocError   Normal
-HiLink spupTextprocGeneric PreProc
-HiLink spupTypes	       Type
+hi def link spupCode	       Normal
+hi def link spupComment	       Comment
+hi def link spupComment2	       spupComment
+hi def link spupConditional     Statement
+hi def link spupConstant	       Constant
+hi def link spupError	       Error
+hi def link spupHelp	       Normal
+hi def link spupIdentifier      Identifier
+hi def link spupNumber	       Constant
+hi def link spupOperator	       Special
+hi def link spupOpenBrace       spupError
+hi def link spupSection	       Statement
+hi def link spupSpecial	       spupTextprocGeneric
+hi def link spupStreams	       Type
+hi def link spupString	       Constant
+hi def link spupSubs	       Statement
+hi def link spupSymbol	       Special
+hi def link spupTextprocError   Normal
+hi def link spupTextprocGeneric PreProc
+hi def link spupTypes	       Type
 
-delcommand HiLink
 
 let b:current_syntax = "spup"