diff --git a/libraries/AP_OpticalFlow/examples/AP_OpticalFlow_test/AP_OpticalFlow_test.pde b/libraries/AP_OpticalFlow/examples/AP_OpticalFlow_test/AP_OpticalFlow_test.pde
index 12807d4dec..5bd0c2087f 100644
--- a/libraries/AP_OpticalFlow/examples/AP_OpticalFlow_test/AP_OpticalFlow_test.pde
+++ b/libraries/AP_OpticalFlow/examples/AP_OpticalFlow_test/AP_OpticalFlow_test.pde
@@ -27,7 +27,7 @@ FastSerialPort0(Serial);        // FTDI/console
 #define CONFIG_MPU6000_CHIP_SELECT_PIN 53   // MPU600 chip select pin
 
 //AP_OpticalFlow_ADNS3080 flowSensor;             // for APM1
-AP_OpticalFlow_ADNS3080 flowSensor(A3);  // override chip select pin to use A3 if using APM2 or APM2.5
+AP_OpticalFlow_ADNS3080 flowSensor(NULL,A3);  // override chip select pin to use A3 if using APM2 or APM2.5
 
 Arduino_Mega_ISR_Registry isr_registry;
 AP_TimerProcess scheduler;
diff --git a/libraries/AP_OpticalFlow/examples/AP_OpticalFlow_test/Makefile b/libraries/AP_OpticalFlow/examples/AP_OpticalFlow_test/Makefile
new file mode 100644
index 0000000000..a5d5e7918b
--- /dev/null
+++ b/libraries/AP_OpticalFlow/examples/AP_OpticalFlow_test/Makefile
@@ -0,0 +1,2 @@
+BOARD	=	mega2560
+include ../../../AP_Common/Arduino.mk