diff --git a/code/game/mecha/equipment/tools/medical_tools.dm b/code/game/mecha/equipment/tools/medical_tools.dm
index 2f017deb0fc..8fccf2825cb 100644
--- a/code/game/mecha/equipment/tools/medical_tools.dm
+++ b/code/game/mecha/equipment/tools/medical_tools.dm
@@ -213,6 +213,9 @@
 /obj/item/mecha_parts/mecha_equipment/medical/sleeper/process()
 	if(..())
 		return
+	if(!chassis)
+		STOP_PROCESSING(SSobj, src)
+		return
 	if(!chassis.has_charge(energy_drain))
 		set_ready_state(1)
 		log_message("Deactivated.")