diff --git a/code/modules/supermatter/supermatter.dm b/code/modules/supermatter/supermatter.dm
index 1ee9f99c451..ba6c0fe1233 100644
--- a/code/modules/supermatter/supermatter.dm
+++ b/code/modules/supermatter/supermatter.dm
@@ -126,7 +126,7 @@
 	integrity = round(100 - integrity * 100)
 	integrity = integrity < 0 ? 0 : integrity
 	var/alert_msg = " Integrity at [integrity]%"
-	
+
 	if(damage > emergency_point)
 		alert_msg = emergency_alert + alert_msg
 		lastwarning = world.timeofday - WARNING_DELAY * 4
@@ -149,7 +149,7 @@
 		else if(safe_warned && public_alert)
 			radio.autosay(alert_msg, "Supermatter Monitor")
 			public_alert = 0
-		
+
 
 /obj/machinery/power/supermatter/process()
 
@@ -243,9 +243,13 @@
 
 	//adjusted range so that a power of 170 (pretty high) results in 9 tiles, roughly the distance from the core to the engine monitoring room.
 	//note that the rads given at the maximum range is a constant 0.2 - as power increases the maximum range merely increases.
-	for(var/mob/living/l in range(src, round(sqrt(power / 2))))
+	//adjusted to pseudo take into account obstacles in the way (1/3rd of the range is dropped if no direct visibility between core and target is)
+	var/rad_range = round(sqrt(power / 2))
+	for(var/mob/living/l in range(src, rad_range))
 		var/radius = max(get_dist(l, src), 1)
 		var/rads = (power / 10) * ( 1 / (radius**2) )
+		if (!(l in oview(rad_range, src)) && !(l in range(src, round(rad_range * 2/3))))
+			continue
 		l.apply_effect(rads, IRRADIATE)
 
 	power -= (power/DECAY_FACTOR)**3		//energy losses due to radiation