diff --git a/Makefile.am b/Makefile.am
index 37adaf1..a2f65be 100755
--- a/Makefile.am
+++ b/Makefile.am
@@ -10,6 +10,7 @@
 
 openpower_update_manager_SOURCES = \
 	activation.cpp \
+	functions.cpp \
 	version.cpp \
 	item_updater.cpp \
 	item_updater_main.cpp \