diff --git a/tests/unittests/tests-cn_cbor/Makefile.include b/tests/unittests/tests-cn_cbor/Makefile.include
index 836c064d53154098a57174e696b3852649b773a6..defc626e780fecda89efad4b67f2ad5a62a91396 100644
--- a/tests/unittests/tests-cn_cbor/Makefile.include
+++ b/tests/unittests/tests-cn_cbor/Makefile.include
@@ -1,3 +1,3 @@
-USEPKG += cn-cbor
+USEPKG += cn-cbor
 USEMODULE += fmt
 USEMODULE += memarray
diff --git a/tests/unittests/tests-cn_cbor/tests-cn_cbor.c b/tests/unittests/tests-cn_cbor/tests-cn_cbor.c
index 81ddc35e6bd0b9d12697c53a66f298e87623e942..7d535837dfa25aa9b0a3a8e5b3e3bea5771d343f 100644
--- a/tests/unittests/tests-cn_cbor/tests-cn_cbor.c
+++ b/tests/unittests/tests-cn_cbor/tests-cn_cbor.c
@@ -1,4 +1,4 @@
-/*
+/*
  * Copyright (C) Lorenz Hüther, Mathias Detmers
  *
  * This file is subject to the terms and conditions of the GNU Lesser
diff --git a/tests/unittests/tests-libcose/Makefile b/tests/unittests/tests-libcose/Makefile
index 967631ff5dcc711ba91c275e676e32075a037651..48422e909a47d7cd428d10fa73825060ccc8d8c2 100644
--- a/tests/unittests/tests-libcose/Makefile
+++ b/tests/unittests/tests-libcose/Makefile
@@ -1 +1 @@
-include $(RIOTBASE)/Makefile.base
+include $(RIOTBASE)/Makefile.base
diff --git a/tests/unittests/tests-libcose/Makefile.include b/tests/unittests/tests-libcose/Makefile.include
index 8912e9dff4264c85b457d46d0200e6c935a81937..26de7cc1b8843bef39788e4e37c6cee2df8a552e 100644
--- a/tests/unittests/tests-libcose/Makefile.include
+++ b/tests/unittests/tests-libcose/Makefile.include
@@ -1,4 +1,4 @@
-CFLAGS +=-DCOSE_SIGNATURES_MAX=2
+CFLAGS +=-DCOSE_SIGNATURES_MAX=2
 
 USEPKG += libcose
 
diff --git a/tests/unittests/tests-libcose/tests-libcose.c b/tests/unittests/tests-libcose/tests-libcose.c
index ccd989ec9615f0820e85e542da0fbb6b3b254ed9..d6621c2f058e147131683f17a77b83f5b4e9ef3e 100644
--- a/tests/unittests/tests-libcose/tests-libcose.c
+++ b/tests/unittests/tests-libcose/tests-libcose.c
@@ -1,4 +1,4 @@
-/*
+/*
  * Copyright (C) 2018 Freie Universität Berlin
  * Copyright (C) 2018 Inria
  *
diff --git a/tests/unittests/tests-uuid/Makefile b/tests/unittests/tests-uuid/Makefile
index 967631ff5dcc711ba91c275e676e32075a037651..48422e909a47d7cd428d10fa73825060ccc8d8c2 100644
--- a/tests/unittests/tests-uuid/Makefile
+++ b/tests/unittests/tests-uuid/Makefile
@@ -1 +1 @@
-include $(RIOTBASE)/Makefile.base
+include $(RIOTBASE)/Makefile.base
diff --git a/tests/unittests/tests-uuid/Makefile.include b/tests/unittests/tests-uuid/Makefile.include
index 44e9a076cb7a5000ad9306bc840a82ba566b9524..4bc6c14a15451c112e56f245988961eb5cbe5325 100644
--- a/tests/unittests/tests-uuid/Makefile.include
+++ b/tests/unittests/tests-uuid/Makefile.include
@@ -1 +1 @@
-USEMODULE += uuid
+USEMODULE += uuid
diff --git a/tests/unittests/tests-uuid/tests-uuid.c b/tests/unittests/tests-uuid/tests-uuid.c
index bb6560ec185c5bde093885fe3ca54c4a47f8c471..0552d24ae877ed175d31f26f21bcfedde12539da 100644
--- a/tests/unittests/tests-uuid/tests-uuid.c
+++ b/tests/unittests/tests-uuid/tests-uuid.c
@@ -1,4 +1,4 @@
-/*
+/*
  * Copyright (C) 2018 Freie Universität Berlin
  * Copyright (C) 2018 Inria
  *