--- 7zip.c.orig	2011-01-09 02:53:44.840002221 +0100
+++ 7zip.c	2011-01-09 02:56:58.000000000 +0100
@@ -72,7 +72,7 @@

 	if (jump_header == FALSE)
 	{
-		if (line[0] == '-')
+		if ((line[0] == '-') && (line[3] != NULL))
 		{
 			jump_header = TRUE;
 			return;