diff --git a/models/iaf_cond_alpha_mc.h b/models/iaf_cond_alpha_mc.h
index 41f93eeb38..ab67638f4e 100644
--- a/models/iaf_cond_alpha_mc.h
+++ b/models/iaf_cond_alpha_mc.h
@@ -68,10 +68,14 @@ Short description
 
 Multi-compartment conductance-based leaky integrate-and-fire neuron model
 
-
 Description
 +++++++++++
 
+.. admonition:: Deprecated model
+
+   ``iaf_cond_alpha_mc`` is deprecated because ``cm_default`` is an improved
+   implementation of compartmental models in NEST (see :doc:`cm_default`).
+
 THIS MODEL IS A PROTOTYPE FOR ILLUSTRATION PURPOSES. IT IS NOT YET
 FULLY TESTED. USE AT YOUR OWN PERIL!