diff --git a/runtime/syntax/occam.vim b/runtime/syntax/occam.vim
index bab84f2..01d139b 100644
--- a/runtime/syntax/occam.vim
+++ b/runtime/syntax/occam.vim
@@ -85,34 +85,32 @@
 
 syn region occamCDirective	start=/#\(USE\|INCLUDE\|PRAGMA\|DEFINE\|UNDEFINE\|UNDEF\|IF\|ELIF\|ELSE\|ENDIF\|WARNING\|ERROR\|RELAX\)\>/ end=/$/ contains=occamString,occamComment,occamCDString
 
-command -nargs=+ HiLink hi def link <args>
 
-HiLink occamType Type
-HiLink occamKeyword Keyword
-HiLink occamComment Comment
-HiLink occamCommentTitle PreProc
-HiLink occamTodo Todo
-HiLink occamNote Todo
-HiLink occamString String
-HiLink occamCharString String
-HiLink occamNumber Number
-HiLink occamCDirective PreProc
-HiLink occamCDString String
-HiLink occamPPIdentifier PreProc
-HiLink occamBoolean Boolean
-HiLink occamSpecialChar SpecialChar
-HiLink occamChar Character
-HiLink occamStructure Structure
-HiLink occamIdentifier Identifier
-HiLink occamConstant Constant
-HiLink occamOperator Operator
-HiLink occamFunction Ignore
-HiLink occamRepeat Repeat
-HiLink occamConditional Conditional
-HiLink occamBrackets Type
-HiLink occamParantheses Delimiter
+hi def link occamType Type
+hi def link occamKeyword Keyword
+hi def link occamComment Comment
+hi def link occamCommentTitle PreProc
+hi def link occamTodo Todo
+hi def link occamNote Todo
+hi def link occamString String
+hi def link occamCharString String
+hi def link occamNumber Number
+hi def link occamCDirective PreProc
+hi def link occamCDString String
+hi def link occamPPIdentifier PreProc
+hi def link occamBoolean Boolean
+hi def link occamSpecialChar SpecialChar
+hi def link occamChar Character
+hi def link occamStructure Structure
+hi def link occamIdentifier Identifier
+hi def link occamConstant Constant
+hi def link occamOperator Operator
+hi def link occamFunction Ignore
+hi def link occamRepeat Repeat
+hi def link occamConditional Conditional
+hi def link occamBrackets Type
+hi def link occamParantheses Delimiter
 
-delcommand HiLink
 
 let b:current_syntax = "occam"