diff --git a/g10/ChangeLog b/g10/ChangeLog
index 77b05a6a1..8a87e1a16 100644
--- a/g10/ChangeLog
+++ b/g10/ChangeLog
@@ -1,5 +1,8 @@
 2006-02-23  David Shaw  <dshaw@jabberwocky.com>
 
+	* gpg.c (add_notation_data): Fix reversed logic for isascii check
+	when adding notations.  Noted by Christian Biere.
+
 	* options.h, keyserver.c (add_canonical_option): New.
 	(parse_keyserver_options): Moved from here.
 	(parse_keyserver_uri): Use it here so each keyserver can have some
diff --git a/g10/gpg.c b/g10/gpg.c
index e748ee06e..92b274ba4 100644
--- a/g10/gpg.c
+++ b/g10/gpg.c
@@ -4029,7 +4029,7 @@ add_notation_data( const char *string, int which )
     /* we only support printable text - therefore we enforce the use
      * of only printable characters (an empty value is valid) */
     for( s++; *s ; s++ ) {
-	if ( isascii (*s) )
+	if ( !isascii (*s) )
           highbit = 1;
 	else if (iscntrl(*s)) {
 	    log_error(_("a notation value must not use"