diff --git a/avahi.spec b/avahi.spec
index 6c07c95..f3948f3 100644
--- a/avahi.spec
+++ b/avahi.spec
@@ -113,6 +113,8 @@ automake-1.9 --add-missing
 autoconf
 
 %configure --with-distro=fedora --disable-qt4 --disable-monodoc --without-python-twisted --with-avahi-user=avahi --with-avahi-group=avahi --enable-compat-howl --enable-compat-libdns_sd
+# enable mono's mcs to work in beehive buildroot:
+export MONO_SHARED_DIR=.
 make %{?_smp_mflags}
 
 %install