diff --git a/msg/estimator_status.msg b/msg/estimator_status.msg
index 2c6d055b26..953e466051 100644
--- a/msg/estimator_status.msg
+++ b/msg/estimator_status.msg
@@ -63,9 +63,10 @@ uint16 innovation_check_flags # Bitmask to indicate pass/fail status of innovati
 # 5 - true if the Z magnetometer observation has been rejected
 # 6 - true if the yaw observation has been rejected
 # 7 - true if the airspeed observation has been rejected
-# 8 - true if the height above ground observation has been rejected
-# 9 - true if the X optical flow observation has been rejected
-# 10 - true if the Y optical flow observation has been rejected
+# 8 - true if the synthetic sideslip observation has been rejected
+# 9 - true if the height above ground observation has been rejected
+# 10 - true if the X optical flow observation has been rejected
+# 11 - true if the Y optical flow observation has been rejected
 float32 mag_test_ratio # ratio of the largest magnetometer innovation component to the innovation test limit
 float32 vel_test_ratio # ratio of the largest velocity innovation component to the innovation test limit
 float32 pos_test_ratio # ratio of the largest horizontal position innovation component to the innovation test limit