diff --git a/code/modules/atmospherics/machinery/portable/canister.dm b/code/modules/atmospherics/machinery/portable/canister.dm
index 1278c99d0f4..6f64fc6f0a9 100644
--- a/code/modules/atmospherics/machinery/portable/canister.dm
+++ b/code/modules/atmospherics/machinery/portable/canister.dm
@@ -280,7 +280,7 @@
 		air_contents.copy_from(existing_mixture)
 	else
 		create_gas()
-	update_overlays()
+	update_icon()
 
 
 /obj/machinery/portable_atmospherics/canister/proc/create_gas()
diff --git a/icons/obj/atmos.dmi b/icons/obj/atmos.dmi
index 1d592388717..574851ab51a 100644
Binary files a/icons/obj/atmos.dmi and b/icons/obj/atmos.dmi differ