bugfix: disallow error string

1 files changed, 1 insertions, 1 deletions

diff --git a/index.cgi b/index.cgi
index 91d8d05..ff884c2 100755
--- a/index.cgi
+++ b/index.cgi
@@ -38,7 +38,7 @@ if $cgi.include?("create_poll") && $cgi.include?("poll_url")
 	else
 		if $cgi["poll_url"] == ""
 			guessurl = POLLTITLE.gsub(" ","_").gsub(/[\?\!\.]/,"")
-			if guessurl =~ /^[a-zA-Z0-9_-]*$/ && !File.exist?(guessurl)
+			if guessurl =~ /^[a-zA-Z0-9_-]+$/ && !File.exist?(guessurl)
 				POLLURL = guessurl
 			else
 				chars = ("a".."z").to_a + ("1".."9").to_a