diff --git a/code/ATMOSPHERICS/components/unary_devices/vent_pump.dm b/code/ATMOSPHERICS/components/unary_devices/vent_pump.dm
index 2e7707a725f..5725a7a8e9b 100644
--- a/code/ATMOSPHERICS/components/unary_devices/vent_pump.dm
+++ b/code/ATMOSPHERICS/components/unary_devices/vent_pump.dm
@@ -128,66 +128,56 @@
 
 /obj/machinery/atmospherics/unary/vent_pump/process_atmos()
 	..()
-	if((stat & (NOPOWER|BROKEN)))
-		return 0
+	if(stat & (NOPOWER|BROKEN))
+		return FALSE
 	if(!node)
-		on = 0
+		on = FALSE
 	//broadcast_status() // from now air alarm/control computer should request update purposely --rastaf0
 	if(!on)
-		return 0
+		return FALSE
 
 	if(welded)
 		if(air_contents.return_pressure() >= weld_burst_pressure && prob(5))	//the weld is on but the cover is welded shut, can it withstand the internal pressure?
 			visible_message("<span class='danger'>The welded cover of [src] bursts open!</span>")
-			for(var/mob/living/M in range(1, src))
+			for(var/mob/living/M in range(1))
 				unsafe_pressure_release(M, air_contents.return_pressure())	//let's send everyone flying
 			welded = FALSE
 			update_icon()
-		return 0
+		return FALSE
 
 	var/datum/gas_mixture/environment = loc.return_air()
 	var/environment_pressure = environment.return_pressure()
-
 	if(pump_direction) //internal -> external
 		var/pressure_delta = 10000
-
-		if(pressure_checks&1)
+		if(pressure_checks & 1)
 			pressure_delta = min(pressure_delta, (external_pressure_bound - environment_pressure))
-		if(pressure_checks&2)
+		if(pressure_checks & 2)
 			pressure_delta = min(pressure_delta, (air_contents.return_pressure() - internal_pressure_bound))
 
-		if(pressure_delta > 0.5)
-			if(air_contents.temperature > 0)
-				var/transfer_moles = pressure_delta*environment.volume/(air_contents.temperature * R_IDEAL_GAS_EQUATION)
-
-				var/datum/gas_mixture/removed = air_contents.remove(transfer_moles)
-
-				loc.assume_air(removed)
-				air_update_turf()
-
-				parent.update = 1
+		if(pressure_delta > 0.5 && air_contents.temperature > 0)
+			var/transfer_moles = pressure_delta * environment.volume / (air_contents.temperature * R_IDEAL_GAS_EQUATION)
+			var/datum/gas_mixture/removed = air_contents.remove(transfer_moles)
+			loc.assume_air(removed)
+			air_update_turf()
+			parent.update = TRUE
 
 	else //external -> internal
 		var/pressure_delta = 10000
-		if(pressure_checks&1)
+		if(pressure_checks & 1)
 			pressure_delta = min(pressure_delta, (environment_pressure - external_pressure_bound))
-		if(pressure_checks&2)
+		if(pressure_checks & 2)
 			pressure_delta = min(pressure_delta, (internal_pressure_bound - air_contents.return_pressure()))
 
-		if(pressure_delta > 0.5)
-			if(environment.temperature > 0)
-				var/transfer_moles = pressure_delta*air_contents.volume/(environment.temperature * R_IDEAL_GAS_EQUATION)
+		if(pressure_delta > 0.5 && environment.temperature > 0)
+			var/transfer_moles = pressure_delta * air_contents.volume / (environment.temperature * R_IDEAL_GAS_EQUATION)
+			var/datum/gas_mixture/removed = loc.remove_air(transfer_moles)
+			if(isnull(removed)) //in space
+				return
+			air_contents.merge(removed)
+			air_update_turf()
+			parent.update = TRUE
 
-				var/datum/gas_mixture/removed = loc.remove_air(transfer_moles)
-				if(isnull(removed)) //in space
-					return
-
-				air_contents.merge(removed)
-				air_update_turf()
-
-				parent.update = 1
-
-	return 1
+	return TRUE
 
 //Radio remote control