diff --git a/ArduCopter/config.h b/ArduCopter/config.h
index 3d3a19a6b0..698cdd6d75 100644
--- a/ArduCopter/config.h
+++ b/ArduCopter/config.h
@@ -385,6 +385,10 @@
 # define MAXIMUM_THROTTLE	1000
 #endif
 
+#ifndef AUTO_LAND_TIME
+# define AUTO_LAND_TIME	20
+#endif
+
 
 
 //////////////////////////////////////////////////////////////////////////////