--- VirtualBox-4.0.0_OSE/configure
+++ VirtualBox-4.0.0_OSE/configure
@@ -2499,7 +2499,6 @@
 # don't check for yasm for the time beeing as 0.40 and 0.50 both have known bugs
 # [ "$OS" != "darwin" ] && check_yasm
 [ "$OS" != "darwin"  ] && check_xsltproc
-[ "$OS" != "darwin"  ] && check_mkisofs
 
 # the libraries
 [ "$OS" != "darwin"  ] && check_pthread