diff --git a/control/Makefile.am b/control/Makefile.am
index 9ca1797..43f7b69 100644
--- a/control/Makefile.am
+++ b/control/Makefile.am
@@ -9,6 +9,7 @@
 	fan.cpp \
 	main.cpp \
 	manager.cpp \
+	preconditions.cpp \
 	actions.cpp \
 	triggers.cpp \
 	zone.cpp