diff --git a/test/subset/data/Makefile.sources b/test/subset/data/Makefile.sources
index 574f94665..00bd2b9f0 100644
--- a/test/subset/data/Makefile.sources
+++ b/test/subset/data/Makefile.sources
@@ -1,10 +1,10 @@
 TESTS = \
 	tests/basics.tests \
-  $(NULL)
+	$(NULL)
 
 XFAIL_TESTS = \
 	tests/basics.tests \
-  $(NULL)
+	$(NULL)
 
 DISABLED_TESTS = \
 	$(NULL)