diff --git a/ql/src/codeql_ruby/ast/Literal.qll b/ql/src/codeql_ruby/ast/Literal.qll
index 75d038bc203..00aa5359acb 100644
--- a/ql/src/codeql_ruby/ast/Literal.qll
+++ b/ql/src/codeql_ruby/ast/Literal.qll
@@ -310,6 +310,7 @@ class CharacterLiteral extends Literal, @token_character {
  * query = <<SQL
  * SELECT * FROM person
  * WHERE age > 21
+ * SQL
  * ```
  */
 class HereDoc extends StringlikeLiteral {