diff --git a/src/identifiers.md b/src/identifiers.md
index c0730d133..809ff3850 100644
--- a/src/identifiers.md
+++ b/src/identifiers.md
@@ -5,7 +5,7 @@
 > &nbsp;&nbsp; &nbsp;&nbsp; [`a`-`z` `A`-`Z`]&nbsp;[`a`-`z` `A`-`Z` `0`-`9` `_`]<sup>\*</sup>\
 > &nbsp;&nbsp; | `_` [`a`-`z` `A`-`Z` `0`-`9` `_`]<sup>+</sup>
 >
-> RAW_IDENTIFIER : `r#` IDENTIFIER_OR_KEYWORD <sub>*Except `crate`, `extern`, `self`, `super`, `Self`*</sub>
+> RAW_IDENTIFIER : `r#` IDENTIFIER_OR_KEYWORD <sub>*Except `crate`, `self`, `super`, `Self`*</sub>
 >
 > NON_KEYWORD_IDENTIFIER : IDENTIFIER_OR_KEYWORD <sub>*Except a [strict] or [reserved] keyword*</sub>
 >