diff --git a/firmware/controllers/engine_controller.cpp b/firmware/controllers/engine_controller.cpp
index 91ba9a488e..2a140ce59f 100644
--- a/firmware/controllers/engine_controller.cpp
+++ b/firmware/controllers/engine_controller.cpp
@@ -509,7 +509,7 @@ bool validateConfig() {
 		ensureArrayIsAscending("Injection phase load", config->injPhaseLoadBins);
 		ensureArrayIsAscending("Injection phase RPM", config->injPhaseRpmBins);
 
-		ensureArrayIsAscending("Fuel Level Sensor", engineConfiguration->fuelLevelBins);
+		ensureArrayIsAscendingOrDefault("Fuel Level Sensor", engineConfiguration->fuelLevelBins);
 
 		ensureArrayIsAscending("TPS/TPS AE from", config->tpsTpsAccelFromRpmBins);
 		ensureArrayIsAscending("TPS/TPS AE to", config->tpsTpsAccelToRpmBins);