diff --git a/configure.ac b/configure.ac
index 082ab8671..0b718c9f5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1779,7 +1779,7 @@ fi
 AM_CONDITIONAL(LAUNCHD, [test "x$LAUNCHD" = "xyes"])
 
 AC_MSG_CHECKING([whether to build Xdmx DDX])
-PKG_CHECK_MODULES([DMXMODULES], [xmuu xext x11 xrender xfixes xfont xi dmxproto
+PKG_CHECK_MODULES([DMXMODULES], [xmuu xext x11 xrender xfixes xfont xi dmxproto xau $XDMCP_MODULES], [have_dmx=yes], [have_dmx=no])
 if test "x$DMX" = xauto; then
        DMX="$have_dmx"
 fi
@@ -1793,7 +1793,7 @@ if test "x$DMX" = xyes; then
        fi
        DMX_INCLUDES="$XEXT_INC $RENDER_INC $XTRAP_INC $RECORD_INC"
        XDMX_CFLAGS="$DMXMODULES_CFLAGS"
-       XDMX_LIBS="$XEXT_LIB $FB_LIB $CONFIG_LIB $RENDER_LIB $XTRAP_LIB $RECORD_
+       XDMX_LIBS="$XEXT_LIB $FB_LIB $CONFIG_LIB $RENDER_LIB $XTRAP_LIB $RECORD_LIB $XI_LIB $XKB_LIB $XKB_STUB_LIB $MIEXT_SHADOW_LIB $MIEXT_DAMAGE_LIB"
        XDMX_SYS_LIBS="$DMXMODULES_LIBS"
        AC_SUBST([XDMX_CFLAGS])
        AC_SUBST([XDMX_LIBS])