diff --git a/connections/implementation/flags/nearby_connections_feature_flags.h b/connections/implementation/flags/nearby_connections_feature_flags.h
index 2a404f4a..2ee628a6 100644
--- a/connections/implementation/flags/nearby_connections_feature_flags.h
+++ b/connections/implementation/flags/nearby_connections_feature_flags.h
@@ -90,6 +90,10 @@ constexpr auto kUseStableEndpointId =
 constexpr auto kDisableBluetoothClassicScanning =
     flags::Flag<bool>(kConfigPackage, "45639961", false);
 
+// When true, enable instant on lost feature
+constexpr auto kEnableInstantOnLost =
+    flags::Flag<bool>(kConfigPackage, "45642180", false);
+
 }  // namespace nearby_connections_feature
 }  // namespace config_package_nearby
 }  // namespace connections