diff --git a/mozilla/config/autoconf.mk.in b/mozilla/config/autoconf.mk.in
index 93c0fe8b260..a335c4293de 100644
--- a/mozilla/config/autoconf.mk.in
+++ b/mozilla/config/autoconf.mk.in
@@ -249,6 +249,10 @@ MDDEPDIR        := @MDDEPDIR@
 
 MOZ_DISABLE_DTD_DEBUG = @MOZ_DISABLE_DTD_DEBUG@
 
+# For the use of the Fullcircle Talkback tool, if available.
+MOZ_FULLCIRCLE	= @MOZ_FULLCIRCLE@
+FULLCIRCLE_LIBS	= @FULLCIRCLE_LIBS@
+
 # Pulled these out of configure.in,
 # so undefine them now instead of subst
 MOZ_NETCAST	=