diff --git a/runtime/syntax/maxima.vim b/runtime/syntax/maxima.vim
index ca982d7..27dcc18 100644
--- a/runtime/syntax/maxima.vim
+++ b/runtime/syntax/maxima.vim
@@ -227,7 +227,7 @@
 " Comments:
 " maxima supports /* ... */ (like C)
 syn keyword maximaTodo contained	TODO Todo DEBUG
-syn region  maximaCommentBlock	start="/\*" end="\*/"	contains=maximaString,maximaTodo
+syn region  maximaCommentBlock	start="/\*" end="\*/"	contains=maximaString,maximaTodo,maximaCommentBlock
 
 " synchronizing
 syn sync match maximaSyncComment	grouphere maximaCommentBlock "/*"