diff --git a/Makefile.am b/Makefile.am
index cf86f217ef5aba70b2c4ca6a5b41f05673703147..4cd7ff954389af476fa86ccf8fa24d5e03001d36 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -613,13 +613,13 @@ TEST_FILES = \
 	test/data/bdev-drbd-net-ip4.txt \
 	test/data/bdev-drbd-net-ip6.txt \
 	test/data/cert1.pem \
-  test/data/ip-addr-show-dummy0.txt \
-  test/data/ip-addr-show-lo-ipv4.txt \
-  test/data/ip-addr-show-lo-ipv6.txt \
-  test/data/ip-addr-show-lo-oneline-ipv4.txt \
-  test/data/ip-addr-show-lo-oneline-ipv6.txt \
-  test/data/ip-addr-show-lo-oneline.txt \
-  test/data/ip-addr-show-lo.txt \
+	test/data/ip-addr-show-dummy0.txt \
+	test/data/ip-addr-show-lo-ipv4.txt \
+	test/data/ip-addr-show-lo-ipv6.txt \
+	test/data/ip-addr-show-lo-oneline-ipv4.txt \
+	test/data/ip-addr-show-lo-oneline-ipv6.txt \
+	test/data/ip-addr-show-lo-oneline.txt \
+	test/data/ip-addr-show-lo.txt \
 	test/data/proc_drbd8.txt \
 	test/data/proc_drbd80-emptyline.txt \
 	test/data/proc_drbd83.txt \