diff --git a/Makefile.am b/Makefile.am
index 72698b7..20ab498 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -10,6 +10,7 @@
 	$(SDBUSPLUS_CFLAGS)
 
 libpower_la_SOURCES = \
+	pmbus.cpp \
 	timer.cpp \
 	utility.cpp