--- loncom/interface/lonparmset.pm	2019/02/18 13:25:49	1.589
+++ loncom/interface/lonparmset.pm	2019/02/18 13:46:05	1.590
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler to set parameters for assessments
 #
-# $Id: lonparmset.pm,v 1.589 2019/02/18 13:25:49 raeburn Exp $
+# $Id: lonparmset.pm,v 1.590 2019/02/18 13:46:05 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -2069,7 +2069,7 @@ sub isdateparm {
 
 sub is_specialstring {
     my $type=shift;
-    return (($type=~/^string_/) && ((!$type ne 'string_yesno')));
+    return (($type=~/^string_/) && (($type ne 'string_yesno')));
 }
 
 # Prints the HTML and Javascript to select parameters, with various shortcuts.