diff --git a/test/Makefile.am b/test/Makefile.am
index 16a3252..13ff55e 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -6,8 +6,8 @@
 # # Build/add timertest to test suite
 check_PROGRAMS = timertest
 timertest_CPPFLAGS = -Igtest $(GTEST_CPPFLAGS) $(AM_CPPFLAGS)
-timertest_CXXFLAGS = $(PTHREAD_CFLAGS)
+timertest_CXXFLAGS = $(PTHREAD_CFLAGS) ${PHOSPHOR_DBUS_INTERFACES_CFLAGS}
 timertest_LDFLAGS = -lgtest_main -lgtest $(PTHREAD_LIBS) $(OESDK_TESTCASE_FLAGS) \
-                    $(SYSTEMD_LIBS) ${SDBUSPLUS_LIBS}
+                    $(SYSTEMD_LIBS) ${SDBUSPLUS_LIBS} ${PHOSPHOR_DBUS_INTERFACES_LIBS}
 timertest_SOURCES = timertest.cpp
 timertest_LDADD = $(top_builddir)/timer.o