diff --git a/monitor/Makefile.am b/monitor/Makefile.am
index 8eda1e0..bea0933 100644
--- a/monitor/Makefile.am
+++ b/monitor/Makefile.am
@@ -8,7 +8,8 @@
 	argument.cpp \
 	fan.cpp \
 	main.cpp \
-	tach_sensor.cpp
+	tach_sensor.cpp \
+	conditions.cpp
 
 nodist_phosphor_fan_monitor_SOURCES = \
 	fan_monitor_defs.cpp