--- loncom/homework/templates/sampleexternal.problem	2013/05/06 12:21:27	1.6
+++ loncom/homework/templates/sampleexternal.problem	2015/06/03 10:25:12	1.7
@@ -3,8 +3,8 @@
 <script type="loncapa/perl">
 sub fact {
    my $n=shift;
-   if ($n==1) {
-      return $n;
+   if ($n<=1) {
+      return 1;
    } else {
       return $n*&fact($n-1);
    }