diff --git a/code/modules/atmospherics/machinery/datum_pipeline.dm b/code/modules/atmospherics/machinery/datum_pipeline.dm
index 350a08dce6..bd7dd6d297 100644
--- a/code/modules/atmospherics/machinery/datum_pipeline.dm
+++ b/code/modules/atmospherics/machinery/datum_pipeline.dm
@@ -206,7 +206,7 @@
 	. = other_airs + air
 	if(null in .)
 		stack_trace("[src]([REF(src)]) has one or more null gas mixtures, which may cause bugs. Null mixtures will not be considered in reconcile_air().")
-		return listclearnulls(.)
+		listclearnulls(.)
 
 /datum/pipeline/proc/empty()
 	for(var/datum/gas_mixture/GM in get_all_connected_airs())