--- loncom/homework/essayresponse.pm	2007/08/10 20:09:30	1.83
+++ loncom/homework/essayresponse.pm	2007/09/26 00:31:23	1.84
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # essay (ungraded) style responses
 #
-# $Id: essayresponse.pm,v 1.83 2007/08/10 20:09:30 albertel Exp $
+# $Id: essayresponse.pm,v 1.84 2007/09/26 00:31:23 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -246,7 +246,7 @@ sub file_submission {
 	    $uploadedfiletypes=','.$uploadedfiletypes.',';
 	    foreach my $file (@submitted_files) {
 		my ($extension)=($file=~/\.(\w+)$/);
-		unless ($uploadedfiletypes=~/\,$extension\,/i) {
+		unless ($uploadedfiletypes=~/\,\s*\Q$extension\E\s*\,/i) {
 		    $$award='INVALID_FILETYPE';
 		}
 	    }