diff --git a/src/mms/iso_mms/server/mms_server_connection.c b/src/mms/iso_mms/server/mms_server_connection.c
index 3a3196d4..fb0a4118 100644
--- a/src/mms/iso_mms/server/mms_server_connection.c
+++ b/src/mms/iso_mms/server/mms_server_connection.c
@@ -3,22 +3,22 @@
  *
  *  Copyright 2013-2018 Michael Zillgith
  *
- *	This file is part of libIEC61850.
+ *  This file is part of libIEC61850.
  *
- *	libIEC61850 is free software: you can redistribute it and/or modify
- *	it under the terms of the GNU General Public License as published by
- *	the Free Software Foundation, either version 3 of the License, or
- *	(at your option) any later version.
+ *  libIEC61850 is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
  *
- *	libIEC61850 is distributed in the hope that it will be useful,
- *	but WITHOUT ANY WARRANTY; without even the implied warranty of
- *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *	GNU General Public License for more details.
+ *  libIEC61850 is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  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 General Public License
- *	along with libIEC61850.  If not, see <http://www.gnu.org/licenses/>.
+ *  You should have received a copy of the GNU General Public License
+ *  along with libIEC61850.  If not, see <http://www.gnu.org/licenses/>.
  *
- *	See COPYING file for the complete license text.
+ *  See COPYING file for the complete license text.
  *
  *
  *  MMS client connection handling code for libiec61850.
diff --git a/src/mms/iso_server/iso_server.c b/src/mms/iso_server/iso_server.c
index 3ea83a48..65d434ec 100644
--- a/src/mms/iso_server/iso_server.c
+++ b/src/mms/iso_server/iso_server.c
@@ -853,6 +853,7 @@ private_IsoServer_getConnectionCounter(IsoServer self)
 }
 
 #if (CONFIG_MMS_THREADLESS_STACK != 1)
+
 void
 IsoServer_setUserLock(IsoServer self, Semaphore userLock)
 {
@@ -872,4 +873,5 @@ IsoServer_userUnlock(IsoServer self)
     if (self->userLock != NULL)
         Semaphore_post(self->userLock);
 }
-#endif
+
+#endif /* (CONFIG_MMS_THREADLESS_STACK != 1) */