diff --git a/ArduSub/radio.cpp b/ArduSub/radio.cpp
index 9eb6a46e3c..fca173a72b 100644
--- a/ArduSub/radio.cpp
+++ b/ArduSub/radio.cpp
@@ -148,7 +148,7 @@ void Sub::transform_manual_control_to_rc_override(int16_t x, int16_t y, int16_t
 	float throttleScale = 0.8;
 	int16_t rpyCenter = 1500;
 	int16_t throttleBase = 1500-500*throttleScale;
-	int16_t mode;
+	static int16_t mode;
 
 	static int16_t camTilt = 1500;