diff --git a/ArduCopter/config.h b/ArduCopter/config.h
index cbe6cab5e3..9ca64146fd 100644
--- a/ArduCopter/config.h
+++ b/ArduCopter/config.h
@@ -587,7 +587,7 @@
 # define RATE_ROLL_I        0.0
 #endif
 #ifndef RATE_ROLL_D
-# define RATE_ROLL_D        0
+# define RATE_ROLL_D        0.0
 #endif
 #ifndef RATE_ROLL_IMAX
 # define RATE_ROLL_IMAX	 	15			// degrees
@@ -597,10 +597,10 @@
 # define RATE_PITCH_P       0.14
 #endif
 #ifndef RATE_PITCH_I
-# define RATE_PITCH_I		0 // 0.18
+# define RATE_PITCH_I		0.0 // 0.18
 #endif
 #ifndef RATE_PITCH_D
-# define RATE_PITCH_D       0 // 0.002
+# define RATE_PITCH_D       0.0 // 0.002
 #endif
 #ifndef RATE_PITCH_IMAX
 # define RATE_PITCH_IMAX   	15			// degrees