diff --git a/tests/Makefile.am b/tests/Makefile.am
index 4151546f..322b4d83 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -1,58 +1,58 @@
 MAINTAINERCLEANFILES	= Makefile.in
 
 VALGRIND = valgrind -q --error-exitcode=127 --track-fds=yes --leak-check=full
 HELGRIND = valgrind -v --tool=helgrind
 
 check-valgrind: $(check_PROGRAMS)
 	$(MAKE) TESTS_ENVIRONMENT="$(VALGRIND)" check
 
 check-helgrind: $(check_PROGRAMS)
 	$(MAKE) TESTS_ENVIRONMENT="$(HELGRIND)" check
 
 noinst_PROGRAMS = \
 		  ping_test \
 		  khandle_test \
 		  lookup_bench \
 		  $(check_PROGRAMS)
 
 check_PROGRAMS = \
 		  netutils_test \
 		  listener_test \
-		  utils_test
+		  timediff_test
 
 TESTS = $(check_PROGRAMS)
 
 AM_CPPFLAGS		= -DTEST \
 			  -I$(srcdir)/../ \
 			  -I$(srcdir)/../libtap/ \
 			  -I$(srcdir)/../libknet/ \
 			  -I$(srcdir)/../libvty/
 
 AM_LDFLAGS		= \
 			  $(top_builddir)/libtap/libtap.la \
 			  $(top_builddir)/libknet/libknet.a \
 			  $(top_builddir)/libvty/libvty.a
 
 ping_test_SOURCES	= \
 			  ping_test.c \
 			  ../utils.c
 
 khandle_test_SOURCES	= \
 			  khandle_test.c \
 			  ../utils.c
 
 lookup_bench_SOURCES	= \
 			  lookup_bench.c \
 			  ../utils.c
 
 listener_test_SOURCES	= \
 			  listener_test.c \
 			  ../utils.c
 
 netutils_test_SOURCES	= \
 			  netutils_test.c \
 			  ../utils.c
 
-utils_test_SOURCES	= \
-			  utils_test.c \
+timediff_test_SOURCES	= \
+			  timediff_test.c \
 			  ../utils.c
diff --git a/tests/utils_test.c b/tests/timediff_test.c
similarity index 100%
rename from tests/utils_test.c
rename to tests/timediff_test.c