diff --git a/libraries/APM_BMP085/examples/APM_BMP085_test/APM_BMP085_test.pde b/libraries/APM_BMP085/examples/APM_BMP085_test/APM_BMP085_test.pde
index 168aa6ae31..66f107e9be 100644
--- a/libraries/APM_BMP085/examples/APM_BMP085_test/APM_BMP085_test.pde
+++ b/libraries/APM_BMP085/examples/APM_BMP085_test/APM_BMP085_test.pde
@@ -13,8 +13,11 @@ unsigned long timer;
 
 FastSerialPort0(Serial);
 
-// set this to true on purple
+#ifdef PURPLE_HARDWARE
+static bool purple_hardware = true;
+#else
 static bool purple_hardware = false;
+#endif
 
 void setup()
 {	
diff --git a/libraries/APM_BMP085/examples/APM_BMP085_test/Makefile b/libraries/APM_BMP085/examples/APM_BMP085_test/Makefile
index 85b4d8856b..4e3c0e42ba 100644
--- a/libraries/APM_BMP085/examples/APM_BMP085_test/Makefile
+++ b/libraries/APM_BMP085/examples/APM_BMP085_test/Makefile
@@ -1,2 +1,5 @@
 BOARD	=	mega
 include ../../../AP_Common/Arduino.mk
+
+purple:
+	make -f Makefile EXTRAFLAGS="-DPURPLE_HARDWARE=1"