diff --git a/code/game/machinery/atmoalter/canister.dm b/code/game/machinery/atmoalter/canister.dm
index 5219bd22b7c..3e91d70f6c3 100644
--- a/code/game/machinery/atmoalter/canister.dm
+++ b/code/game/machinery/atmoalter/canister.dm
@@ -19,6 +19,9 @@
 	var/release_log = ""
 	var/update_flag = 0
 
+/obj/machinery/portable_atmospherics/canister/drain_power()
+	return -1
+
 /obj/machinery/portable_atmospherics/canister/sleeping_agent
 	name = "Canister: \[N2O\]"
 	icon_state = "redws"