diff --git a/code/game/objects/items/grenades/ghettobomb.dm b/code/game/objects/items/grenades/ghettobomb.dm
index 2d3d5e69b68..1295fe56f32 100644
--- a/code/game/objects/items/grenades/ghettobomb.dm
+++ b/code/game/objects/items/grenades/ghettobomb.dm
@@ -55,6 +55,9 @@
 	explosion(src.loc,-1,-1,2, flame_range = 4)	// small explosion, plus a very large fireball.
 	qdel(src)
 
+/obj/item/grenade/iedcasing/change_det_time()
+	return //always be random.
+
 /obj/item/grenade/iedcasing/examine(mob/user)
 	. = ..()
 	. += "You can't tell when it will explode!"
diff --git a/code/game/objects/items/grenades/grenade.dm b/code/game/objects/items/grenades/grenade.dm
index 47beefd83d9..4871a90f1ee 100644
--- a/code/game/objects/items/grenades/grenade.dm
+++ b/code/game/objects/items/grenades/grenade.dm
@@ -87,18 +87,19 @@
 		if(W.tool_behaviour == TOOL_MULTITOOL)
 			var/newtime = text2num(stripped_input(user, "Please enter a new detonation time", name))
 			if (newtime != null && user.canUseTopic(src, BE_CLOSE))
-				change_det_time(newtime)
-				to_chat(user, "<span class='notice'>You modify the time delay. It's set for [DisplayTimeText(det_time)].</span>")
-				if (round(newtime * 10) != det_time)
-					to_chat(user, "<span class='warning'>The new value is out of bounds. The lowest possible time is 3 seconds and highest is 5 seconds. Instant detonations are also possible.</span>")
+				if(change_det_time(newtime))
+					to_chat(user, "<span class='notice'>You modify the time delay. It's set for [DisplayTimeText(det_time)].</span>")
+					if (round(newtime * 10) != det_time)
+						to_chat(user, "<span class='warning'>The new value is out of bounds. The lowest possible time is 3 seconds and highest is 5 seconds. Instant detonations are also possible.</span>")
 			return
 		else if(W.tool_behaviour == TOOL_SCREWDRIVER)
-			change_det_time()
-			to_chat(user, "<span class='notice'>You modify the time delay. It's set for [DisplayTimeText(det_time)].</span>")
+			if(change_det_time())
+				to_chat(user, "<span class='notice'>You modify the time delay. It's set for [DisplayTimeText(det_time)].</span>")
 	else
 		return ..()
 
 /obj/item/grenade/proc/change_det_time(time) //Time uses real time.
+	. = TRUE
 	if(time != null)
 		if(time < 3)
 			time = 3