--- loncom/homework/radiobuttonresponse.pm	2005/06/21 21:00:55	1.101
+++ loncom/homework/radiobuttonresponse.pm	2005/06/22 12:03:23	1.102
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # mutliple choice style responses
 #
-# $Id: radiobuttonresponse.pm,v 1.101 2005/06/21 21:00:55 albertel Exp $
+# $Id: radiobuttonresponse.pm,v 1.102 2005/06/22 12:03:23 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -607,7 +607,7 @@ sub end_foil {
 	my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
 	if ($value ne 'unused') {
 	    my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
-	    if (!$name) {
+	    if ($name eq "") {
 		&Apache::lonxml::warning("Foils without names exist. This can cause problems to malfunction.");
 		$name=$Apache::lonxml::curdepth;
 	    }