diff --git a/CMakeLists.txt b/CMakeLists.txt
index be4fceca3..409893484 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -76,7 +76,7 @@ option( WITH_XSCREENSAVER "Enable xscreensaver support" ${WITH_ALL_OPTIONS} )
 option( WITH_LIBART "Enable libart support (for SVG icons and wallpapers)" ${WITH_ALL_OPTIONS} )
 option( WITH_LIBUSB "Enable control of some mouse models through libusb" ${WITH_ALL_OPTIONS} )
 option( WITH_LIBRAW1394 "Enable visualization of ieee1394 devices through libraw1394" ${WITH_ALL_OPTIONS} )
-option( WITH_SUDO_TDESU_BACKEND "Use sudo as backend for tdesu (default is su)" ${WITH_ALL_OPTIONS} )
+option( WITH_SUDO_TDESU_BACKEND "Use sudo as backend for tdesu (default is su)" OFF )
 option( WITH_PAM "tdm should use PAM" ${WITH_ALL_OPTIONS} )
 option( WITH_SHADOW "tdm should use shadow passwords" ${WITH_ALL_OPTIONS} )
 option( WITH_XDMCP "xdmcp support for tdm" ${WITH_ALL_OPTIONS} )