diff --git a/code/game/machinery/atmoalter/portable_atmospherics.dm b/code/game/machinery/atmoalter/portable_atmospherics.dm
index 5e8817359f..9ba8c2de49 100644
--- a/code/game/machinery/atmoalter/portable_atmospherics.dm
+++ b/code/game/machinery/atmoalter/portable_atmospherics.dm
@@ -68,6 +68,7 @@
 	//Perform the connection
 	connected_port = new_port
 	connected_port.connected_device = src
+	connected_port.on = 1 //Activate port updates
 
 	anchored = 1 //Prevent movement