diff --git a/firmware/controllers/math/engine_math.cpp b/firmware/controllers/math/engine_math.cpp
index 2ff1b6422d..3ff7dba4f9 100644
--- a/firmware/controllers/math/engine_math.cpp
+++ b/firmware/controllers/math/engine_math.cpp
@@ -166,7 +166,8 @@ bool FuelSchedule::addFuelEventsForCylinder(int i  DECLARE_ENGINE_PARAMETER_SUFF
 
 	int cylindersCount = CONFIG(specs.cylindersCount);
 	if (cylindersCount < 1) {
-		firmwareError(CUSTOM_OBD_ZERO_CYLINDER_COUNT, "Invalid cylinder count: %d", cylindersCount);
+	    // May 2020 this somehow still happens with functional tests, maybe race condition?
+		warning(CUSTOM_OBD_ZERO_CYLINDER_COUNT, "Invalid cylinder count: %d", cylindersCount);
 		return false;
 	}