diff --git a/code/game/machinery/machinery.dm b/code/game/machinery/machinery.dm
index 7a92f0d581b..a29dcb9e274 100644
--- a/code/game/machinery/machinery.dm
+++ b/code/game/machinery/machinery.dm
@@ -129,7 +129,7 @@ Class Procs:
 	if(use_power)
 		myArea = get_area_master(src)
 	if(!speed_process)
-		if(!src.defer_process)
+		if(!defer_process)
 			START_PROCESSING(SSmachines, src)
 		else
 			START_DEFERRED_PROCESSING(SSmachines, src)