diff --git a/presence/Makefile.am b/presence/Makefile.am
index 8af030c..7cc80d4 100644
--- a/presence/Makefile.am
+++ b/presence/Makefile.am
@@ -7,6 +7,7 @@
 phosphor_gpio_presence_SOURCES = \
 	main.cpp \
 	argument.cpp \
+	../evdev.cpp \
 	gpio_presence.cpp
 
 phosphor_gpio_presence_CXXFLAGS = \