diff --git a/src/osmo_sccp_sup.erl b/src/osmo_sccp_sup.erl
index 9b42370..cce6582 100644
--- a/src/osmo_sccp_sup.erl
+++ b/src/osmo_sccp_sup.erl
@@ -16,6 +16,20 @@
 %
 % You should have received a copy of the GNU Affero General Public License
 % along with this program.  If not, see <http://www.gnu.org/licenses/>.
+%
+% Additional Permission under GNU AGPL version 3 section 7:
+%
+% If you modify this Program, or any covered work, by linking or
+% combining it with runtime libraries of Erlang/OTP as released by
+% Ericsson on http://www.erlang.org (or a modified version of these
+% libraries), containing parts covered by the terms of the Erlang Public
+% License (http://www.erlang.org/EPLICENSE), the licensors of this
+% Program grant you additional permission to convey the resulting work
+% without the need to license the runtime libraries of Erlang/OTP under
+% the GNU Affero General Public License. Corresponding Source for a
+% non-source form of such a combination shall include the source code
+% for the parts of the runtime libraries of Erlang/OTP used as well as
+% that of the covered work.
 
 -module(osmo_sccp_sup).
 -behavior(supervisor).
diff --git a/src/sccp_routing.erl b/src/sccp_routing.erl
index 6b1a140..46f23a0 100644
--- a/src/sccp_routing.erl
+++ b/src/sccp_routing.erl
@@ -16,6 +16,18 @@
 %
 % You should have received a copy of the GNU Affero General Public License
 % along with this program.  If not, see <http://www.gnu.org/licenses/>.
+%
+% If you modify this Program, or any covered work, by linking or
+% combining it with runtime libraries of Erlang/OTP as released by
+% Ericsson on http://www.erlang.org (or a modified version of these
+% libraries), containing parts covered by the terms of the Erlang Public
+% License (http://www.erlang.org/EPLICENSE), the licensors of this
+% Program grant you additional permission to convey the resulting work
+% without the need to license the runtime libraries of Erlang/OTP under
+% the GNU Affero General Public License. Corresponding Source for a
+% non-source form of such a combination shall include the source code
+% for the parts of the runtime libraries of Erlang/OTP used as well as
+% that of the covered work.
 
 -module(sccp_routing).
 -author('Harald Welte <laforge@gnumonks.org>').
diff --git a/src/sccp_scoc.erl b/src/sccp_scoc.erl
index 669b807..0cb92b0 100644
--- a/src/sccp_scoc.erl
+++ b/src/sccp_scoc.erl
@@ -16,6 +16,18 @@
 %
 % You should have received a copy of the GNU Affero General Public License
 % along with this program.  If not, see <http://www.gnu.org/licenses/>.
+%
+% If you modify this Program, or any covered work, by linking or
+% combining it with runtime libraries of Erlang/OTP as released by
+% Ericsson on http://www.erlang.org (or a modified version of these
+% libraries), containing parts covered by the terms of the Erlang Public
+% License (http://www.erlang.org/EPLICENSE), the licensors of this
+% Program grant you additional permission to convey the resulting work
+% without the need to license the runtime libraries of Erlang/OTP under
+% the GNU Affero General Public License. Corresponding Source for a
+% non-source form of such a combination shall include the source code
+% for the parts of the runtime libraries of Erlang/OTP used as well as
+% that of the covered work.
 
 -module(sccp_scoc).
 -behaviour(gen_fsm).
diff --git a/src/sccp_scrc.erl b/src/sccp_scrc.erl
index 6d92a99..116cb58 100644
--- a/src/sccp_scrc.erl
+++ b/src/sccp_scrc.erl
@@ -16,6 +16,18 @@
 %
 % You should have received a copy of the GNU Affero General Public License
 % along with this program.  If not, see <http://www.gnu.org/licenses/>.
+%
+% If you modify this Program, or any covered work, by linking or
+% combining it with runtime libraries of Erlang/OTP as released by
+% Ericsson on http://www.erlang.org (or a modified version of these
+% libraries), containing parts covered by the terms of the Erlang Public
+% License (http://www.erlang.org/EPLICENSE), the licensors of this
+% Program grant you additional permission to convey the resulting work
+% without the need to license the runtime libraries of Erlang/OTP under
+% the GNU Affero General Public License. Corresponding Source for a
+% non-source form of such a combination shall include the source code
+% for the parts of the runtime libraries of Erlang/OTP used as well as
+% that of the covered work.
 
 -module(sccp_scrc).
 -behaviour(gen_fsm).
diff --git a/src/sccp_ssn_dump.erl b/src/sccp_ssn_dump.erl
index ee23f83..ac94782 100644
--- a/src/sccp_ssn_dump.erl
+++ b/src/sccp_ssn_dump.erl
@@ -14,9 +14,20 @@
 % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 % GNU General Public License for more details.
 %
-% You should have received a copy of the GNU Affero General Public
-% License
+% You should have received a copy of the GNU Affero General Public License
 % along with this program.  If not, see <http://www.gnu.org/licenses/>.
+%
+% If you modify this Program, or any covered work, by linking or
+% combining it with runtime libraries of Erlang/OTP as released by
+% Ericsson on http://www.erlang.org (or a modified version of these
+% libraries), containing parts covered by the terms of the Erlang Public
+% License (http://www.erlang.org/EPLICENSE), the licensors of this
+% Program grant you additional permission to convey the resulting work
+% without the need to license the runtime libraries of Erlang/OTP under
+% the GNU Affero General Public License. Corresponding Source for a
+% non-source form of such a combination shall include the source code
+% for the parts of the runtime libraries of Erlang/OTP used as well as
+% that of the covered work.
 
 -module(sccp_ssn_dump).
 -behaviour(gen_server).
diff --git a/src/sccp_user.erl b/src/sccp_user.erl
index e0853e3..3f51034 100644
--- a/src/sccp_user.erl
+++ b/src/sccp_user.erl
@@ -16,6 +16,18 @@
 %
 % You should have received a copy of the GNU Affero General Public License
 % along with this program.  If not, see <http://www.gnu.org/licenses/>.
+%
+% If you modify this Program, or any covered work, by linking or
+% combining it with runtime libraries of Erlang/OTP as released by
+% Ericsson on http://www.erlang.org (or a modified version of these
+% libraries), containing parts covered by the terms of the Erlang Public
+% License (http://www.erlang.org/EPLICENSE), the licensors of this
+% Program grant you additional permission to convey the resulting work
+% without the need to license the runtime libraries of Erlang/OTP under
+% the GNU Affero General Public License. Corresponding Source for a
+% non-source form of such a combination shall include the source code
+% for the parts of the runtime libraries of Erlang/OTP used as well as
+% that of the covered work.
 
 -module(sccp_user).
 -behaviour(gen_server).