diff --git a/libraries/AP_Logger/AP_Logger.h b/libraries/AP_Logger/AP_Logger.h
index e73ef0e67b..eeabfe5153 100644
--- a/libraries/AP_Logger/AP_Logger.h
+++ b/libraries/AP_Logger/AP_Logger.h
@@ -159,6 +159,7 @@ enum class LogErrorCode : uint8_t {
     RESTARTED_RTL = 3,
     FAILED_CIRCLE_INIT = 4,
     DEST_OUTSIDE_FENCE = 5,
+    RTL_MISSING_RNGFND = 6,
 
 // parachute failed to deploy because of low altitude or landed
     PARACHUTE_TOO_LOW = 2,