diff --git a/gcc/algol68/ga68.texi b/gcc/algol68/ga68.texi
index d63b1f9de35..83fcf92e71e 100644
--- a/gcc/algol68/ga68.texi
+++ b/gcc/algol68/ga68.texi
@@ -1331,7 +1331,7 @@ characters are:
 a b c d e f g h i j k l m n o p q r s t u v w x y z
 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
 0 1 2 3 4 5 6 7 8 9
-space tab " # $ % & ' ( ) * + , - . / : ; < = >  @ [ \ ]
+space tab " # $ % & ' ( ) * + , - . / : ; < = >  @@ [ \ ]
 ^ _ | @ ! ? ~ @{ @}
 @end example