diff --git a/code/game/objects/items/grenades/grenade.dm b/code/game/objects/items/grenades/grenade.dm
index 7a6157bf65..fb98e86ae1 100644
--- a/code/game/objects/items/grenades/grenade.dm
+++ b/code/game/objects/items/grenades/grenade.dm
@@ -135,16 +135,16 @@
 /obj/item/grenade/tool_act(mob/living/user, obj/item/I, tool_behaviour)
 	if(tool_behaviour == TOOL_SCREWDRIVER)
 		switch(det_time)
-			if ("1")
-				det_time = 10
+			if(1)
+				det_time = 1 SECONDS
 				to_chat(user, "<span class='notice'>You set the [name] for 1 second detonation time.</span>")
-			if ("10")
-				det_time = 30
+			if(1 SECONDS)
+				det_time = 3 SECONDS
 				to_chat(user, "<span class='notice'>You set the [name] for 3 second detonation time.</span>")
-			if ("30")
-				det_time = 50
+			if(3 SECONDS)
+				det_time = 5 SECONDS
 				to_chat(user, "<span class='notice'>You set the [name] for 5 second detonation time.</span>")
-			if ("50")
+			if(5 SECONDS)
 				det_time = 1
 				to_chat(user, "<span class='notice'>You set the [name] for instant detonation.</span>")
 		add_fingerprint(user)