diff --git a/include/gsup_protocol.hrl b/include/gsup_protocol.hrl
index 2e9c9d3..5db534e 100644
--- a/include/gsup_protocol.hrl
+++ b/include/gsup_protocol.hrl
@@ -2,7 +2,7 @@
 % License, v. 2.0. If a copy of the MPL was not distributed with this
 % file, You can obtain one at https://mozilla.org/MPL/2.0/.
 % (C) 2019 Andrey Velikiy <agreat22@gmail.com>
-% (C) 2019 Fairwaves (edited) 
+% (C) 2019 Fairwaves (edited)
 % (C) 2019 Harald Welte <laforge@gnumonks.org>
 
 -ifndef(GSUP_PROTOCOL).
@@ -85,7 +85,7 @@
   pdp_info_complete => true,
   pdp_info_list => ['GSUPPdpInfo'()],
   cancellation_type => integer(),
-  freeze_p_tmsi => true,  
+  freeze_p_tmsi => true,
   msisdn => binary(),
   hlr_number => binary(),
   pdp_context_id => [integer()],
diff --git a/src/gsup_protocol.erl b/src/gsup_protocol.erl
index 5dd4bda..41e7dd6 100644
--- a/src/gsup_protocol.erl
+++ b/src/gsup_protocol.erl
@@ -2,7 +2,7 @@
 % License, v. 2.0. If a copy of the MPL was not distributed with this
 % file, You can obtain one at https://mozilla.org/MPL/2.0/.
 % (C) 2019 Andrey Velikiy <agreat22@gmail.com>
-% (C) 2019 Fairwaves (edited) 
+% (C) 2019 Fairwaves (edited)
 
 -module(gsup_protocol).
 
@@ -34,7 +34,7 @@
         true -> GSUPMessage;
         false -> error({mandatory_ie_missing, MsgTypeAtom, Mandatory -- maps:keys(GSUPMessage)})
       end;
-    _ -> 
+    _ ->
       error({unknown_gsup_msg_type, MsgType})
   end.
 
@@ -299,13 +299,13 @@
       Possible = Mandatory ++ maps:get(optional, Map, []) ++ ?OPTIONAL_DEFAULT,
       case {maps:size(maps:with(Mandatory, GSUPMessage)) == length(Mandatory),
             maps:size(maps:without(Possible, GSUPMessage)) == 0} of
-        {true, true} -> 
+        {true, true} ->
           Tail = encode_ie(GSUPMessage, <<>>),
           <<MsgType, Tail/binary>>;
         {false, _} -> error({mandatory_ie_missing, MsgTypeAtom, Mandatory -- maps:keys(GSUPMessage)});
         {_, false} -> error({ie_not_expected, MsgTypeAtom, maps:keys(GSUPMessage) -- Possible})
       end;
-    _ -> 
+    _ ->
       error({unknown_gsup_msg_type, MsgType})
   end.