diff --git a/syntax/c.h b/syntax/c.h
index 8ce987f..271ee5c 100644
--- a/syntax/c.h
+++ b/syntax/c.h
@@ -12,6 +12,10 @@ const char * preprocessor_keywords[] = {
   NULL
 };
 
-new_char_tokens("&|()[]{}*,", symbol_hl);
-new_keyword_tokens(c_keywords, keyword_hl);
-new_keyword_tokens(preprocessor_keywords, preprocessor_hl);
+new_char_tokens("+-&|.()[]{}", operator_hl);
+new_keyword_tokens(c_keywords, control_hl);
+new_keyword_tokens(preprocessor_keywords, special_hl);
+new_region_token("/\\*", "\\*/", comment_hl);
+new_region_token("//", "\\n", comment_hl);
+new_region_token("\"", "\"", string_literal_hl);
+new_region_token("<", ">", string_literal_hl);