diff --git a/examples/z1/Makefile b/examples/z1/Makefile
index 941441db1..6cbbaa9c4 100644
--- a/examples/z1/Makefile
+++ b/examples/z1/Makefile
@@ -3,8 +3,7 @@ TARGET=z1
 endif
 
 CONTIKI_PROJECT = test-phidgets blink test-adxl345 tmp102-test test-battery test-sht11 #test-potent
-CONTIKI_SOURCEFILES += cc2420-arch.c sensors.c sht11.c potentiometer-sensor.c
-PROJECT_SOURCEFILES = i2cmaster.c tmp102.c adxl345.c battery-sensor.c sky-sensors.c #potentiometer-sensor.c
+CONTIKI_SOURCEFILES += sht11.c potentiometer-sensor.c
 APPS=serial-shell