--- loncom/homework/caparesponse/caparesponse.pm	2003/07/24 13:25:37	1.106
+++ loncom/homework/caparesponse/caparesponse.pm	2003/07/28 18:29:05	1.107
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # caparesponse definition
 #
-# $Id: caparesponse.pm,v 1.106 2003/07/24 13:25:37 sakharuk Exp $
+# $Id: caparesponse.pm,v 1.107 2003/07/28 18:29:05 sakharuk Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -247,7 +247,7 @@ sub end_numericalresponse {
                            </textarea></font> <br /><br />';
 		}
 	    } elsif ($target eq 'tex') {
-		if (defined $unit and $Apache::lonhomework::type eq 'exam') {
+		if ((defined $unit) and ($unit=~/\S/) and ($Apache::lonhomework::type eq 'exam')) {
 		    $result.=' \textit{(in} \verb|'.$unit.'|\textit{)} ';
 		}
 		if ($$tagstack[-1] eq 'numericalresponse') {