diff --git a/libraries/AP_Logger/AP_Logger.h b/libraries/AP_Logger/AP_Logger.h
index a0d286db6f..40234905c1 100644
--- a/libraries/AP_Logger/AP_Logger.h
+++ b/libraries/AP_Logger/AP_Logger.h
@@ -136,6 +136,8 @@ enum class LogEvent : uint8_t {
     EK3_SOURCES_SET_TO_SECONDARY = 86,
     EK3_SOURCES_SET_TO_TERTIARY = 87,
 
+    AIRSPEED_PRIMARY_CHANGED = 90,
+
     SURFACED = 163,
     NOT_SURFACED = 164,
     BOTTOMED = 165,