diff --git a/syntax/maude.vim b/syntax/maude.vim
index f01b311..bc09487 100644
--- a/syntax/maude.vim
+++ b/syntax/maude.vim
@@ -62,14 +62,15 @@ hi def link maudeIf Conditional
 syn match maudeUnderscore '_'
 hi def link maudeUnderscore Special
 
-syn match maudePunc '\%(^\|\s\)\zs\%(::\?\|->\|=>\|=\%(=\|/=\)\?\)\ze\%(\s\|$\)'
+syn match maudePunc
+  \ '\%(^\|\s\)\zs\%(:[:=]\?\|->\|<-\|=>\|=\%(=\|/=\)\?\|@\)\ze\%(\s\|$\)'
 hi def link maudePunc Operator
 
 syn match maudeDelim '[{}\[\](),]\|\%(^\|\s\)\zs\.\ze\%(\s\|$\)'
 hi def link maudeDelim Delimiter
 
 
-syn keyword maudeCommand reduce red rewrite rew load set quit
+syn keyword maudeCommand load set quit
 hi def link maudeCommand Special