+2017-04-19  Pedro Alves  <palves@redhat.com>
+
+       * Makefile.in (SUBDIR_UNITTESTS_SRCS, SUBDIR_UNITTESTS_OBS):
+       Re-sort in alphabetic order.
+
 2017-04-18  Pedro Alves  <palves@redhat.com>
 
        * xml-support.c (obstack_xml_printf): Delete.
 
 SUBDIR_UNITTESTS_SRCS = \
        unittests/function-view-selftests.c \
        unittests/offset-type-selftests.c \
-       unittests/ptid-selftests.c \
-       unittests/optional-selftests.c
+       unittests/optional-selftests.c \
+       unittests/ptid-selftests.c
 
 SUBDIR_UNITTESTS_OBS = \
        function-view-selftests.o \
        offset-type-selftests.o \
-       ptid-selftests.o \
-       optional-selftests.o
+       optional-selftests.o \
+       ptid-selftests.o
 
 # Opcodes currently live in one of two places.  Either they are in the
 # opcode library, typically ../opcodes, or they are in a header file