diff --git a/resource/vehicleProperties/client.lua b/resource/vehicleProperties/client.lua
index 4a5982f..dc60908 100644
--- a/resource/vehicleProperties/client.lua
+++ b/resource/vehicleProperties/client.lua
@@ -24,10 +24,9 @@ function lib.getVehicleProperties(vehicle)
 
 		local extras = {}
 
-		for i = 0, 12 do
+		for i = 1, 15 do
 			if DoesExtraExist(vehicle, i) then
-				-- [0=on, 1=off]
-				extras[i] = IsVehicleExtraTurnedOn(vehicle, i)
+				extras[i] = IsVehicleExtraTurnedOn(vehicle, i) and 0 or 1
 			end
 		end