diff --git a/ArduSub/Parameters.cpp b/ArduSub/Parameters.cpp
index 8cdd0a029c..a266a45de9 100644
--- a/ArduSub/Parameters.cpp
+++ b/ArduSub/Parameters.cpp
@@ -588,7 +588,7 @@ const AP_Param::Info Sub::var_info[] = {
     // @Range: 50 490
     // @Increment: 1
     // @User: Advanced
-    GSCALAR(rc_speed, "RC_SPEED",              RC_FAST_SPEED),
+    GSCALAR(rc_speed, "RC_SPEED",              RC_SPEED_DEFAULT),
 
     // @Param: ACRO_RP_P
     // @DisplayName: Acro Roll and Pitch P gain
diff --git a/ArduSub/config.h b/ArduSub/config.h
index 74bc9c4c83..2cfaf32f00 100644
--- a/ArduSub/config.h
+++ b/ArduSub/config.h
@@ -82,8 +82,8 @@
 //////////////////////////////////////////////////////////////////////////////
 // PWM control
 // default RC speed in Hz
-#ifndef RC_FAST_SPEED
-   #   define RC_FAST_SPEED 490
+#ifndef RC_SPEED_DEFAULT
+   #   define RC_SPEED_DEFAULT 200
 #endif
 
 //////////////////////////////////////////////////////////////////////////////