diff --git a/libipmid/Makefile.am b/libipmid/Makefile.am
index ac35bbf..e4899e1 100644
--- a/libipmid/Makefile.am
+++ b/libipmid/Makefile.am
@@ -13,6 +13,7 @@
 lib_LTLIBRARIES = libipmid.la
 libipmid_la_SOURCES = \
 	sdbus-asio.cpp \
+	signals.cpp \
 	systemintf-sdbus.cpp
 libipmid_la_LDFLAGS = \
 	$(SYSTEMD_LIBS) \