diff --git a/ArduSub/control_acro.cpp b/ArduSub/control_acro.cpp
index 19e7f505b4..2fd3d17407 100644
--- a/ArduSub/control_acro.cpp
+++ b/ArduSub/control_acro.cpp
@@ -24,7 +24,6 @@ bool Sub::acro_init(bool ignore_checks)
 void Sub::acro_run()
 {
     float target_roll, target_pitch, target_yaw;
-    float pilot_throttle_scaled;
 
     // if not armed set throttle to zero and exit immediately
     if (!motors.armed() || !motors.get_interlock()) {
diff --git a/ArduSub/control_stabilize.cpp b/ArduSub/control_stabilize.cpp
index ed0adf4464..195e89083c 100644
--- a/ArduSub/control_stabilize.cpp
+++ b/ArduSub/control_stabilize.cpp
@@ -24,7 +24,6 @@ void Sub::stabilize_run()
 	uint32_t tnow = AP_HAL::millis();
     float target_roll, target_pitch;
     float target_yaw_rate;
-    float pilot_throttle_scaled;
 
     // if not armed set throttle to zero and exit immediately
     if (!motors.armed() || !motors.get_interlock()) {