diff --git a/movement/make/Makefile b/movement/make/Makefile
index 42c3106..e347d59 100644
--- a/movement/make/Makefile
+++ b/movement/make/Makefile
@@ -140,6 +140,7 @@ SRCS += \
   ../watch_faces/complication/simon_face.c \
   ../watch_faces/complication/simple_calculator_face.c \
   ../watch_faces/sensor/alarm_thermometer_face.c \
+  ../watch_faces/demo/beeps_face.c \
 # New watch faces go above this line.
 
 # Leave this line at the bottom of the file; it has all the targets for making your project.