diff --git a/plugins/http/http_load_ b/plugins/http/http_load_
index b3d9eb9d..52b0eb92 100755
--- a/plugins/http/http_load_
+++ b/plugins/http/http_load_
@@ -185,7 +185,7 @@ sub get_fieldname{
 # Same as get_fieldname except it doesn't substr
 sub get_id{
 	my $url=$_[0];
-	$url =~ s/\W//g;
+	$url =~ s/[\W_]//g;
 	return $url;
 }
 
@@ -195,7 +195,7 @@ $debug && print "Scriptname: " . $scriptname . "\n";
 #
 # The filename format is http_load_X_Y where
 # X: The line number in urls.txt
-# X: The type of graph (elements, size, loadtime, ..)
+# Y: The type of graph (elements, size, loadtime, ..)
 
 my ($id,$type);
 $0 =~ /http_load(?:_([^_]+)|)_(.+)\s*$/;