diff --git a/apps/kolab_guam/src/kolab_guam_session.erl b/apps/kolab_guam/src/kolab_guam_session.erl
--- a/apps/kolab_guam/src/kolab_guam_session.erl
+++ b/apps/kolab_guam/src/kolab_guam_session.erl
@@ -123,13 +123,13 @@
 
 %% private API
 accept_client(#state{ client_implicit_tls = true, listen_socket = ListenSocket, super_pid = SupervisorPID }) ->
-    AcceptResult = ssl:transport_accept(ListenSocket),
+    AcceptResult = gen_tcp:accept(ListenSocket),
     AcceptSocket = post_accept_bookkeeping(implicit_tls, ListenSocket, SupervisorPID, AcceptResult),
     %% prep for the next listen
-    ok = ssl:ssl_accept(AcceptSocket),
-    ok = ssl:setopts(AcceptSocket, [{ active, once }, { mode, binary }]),
+    { ok, SSLSocket } = ssl:ssl_accept(AcceptSocket),
+    ok = ssl:setopts(SSLSocket, [{ active, once }, { mode, binary }]),
     % lager:info("~p All done!", [self()]),
-    { ok, AcceptSocket, true };
+    { ok, SSLSocket, true };
 accept_client(#state{ listen_socket = ListenSocket, super_pid = SupervisorPID }) ->
     AcceptResult = gen_tcp:accept(ListenSocket),
     AcceptSocket = post_accept_bookkeeping(no_implicit_tls, ListenSocket, SupervisorPID, AcceptResult),