diff --git a/monitor/Makefile.am b/monitor/Makefile.am
index e1bfcc0..ecfab71 100644
--- a/monitor/Makefile.am
+++ b/monitor/Makefile.am
@@ -39,3 +39,5 @@
 fan_monitor_defs.cpp: ${srcdir}/gen-fan-monitor-defs.py
 	$(AM_V_GEN)$(GEN_FAN_MONITOR_DEFS) > ${builddir}/$@
 endif
+
+SUBDIRS = test