it compiles, that's better than it not compiling, right?

code/game/objects/items/grenades/chem_grenade.dm

@@ -311,7 +311,7 @@
 		message_admins("grenade primed by an assembly at [AREACOORD(DT)], attached by [ADMIN_LOOKUPFLW(M)] and last touched by [ADMIN_LOOKUPFLW(last)] ([nadeassembly.a_left.name] and [nadeassembly.a_right.name])</a>.")
 		log_game("grenade primed by an assembly at [AREACOORD(DT)], attached by [key_name(M)] and last touched by [key_name(last)] ([nadeassembly.a_left.name] and [nadeassembly.a_right.name])")
 	else
-		addtimer(CALLBACK(src, .proc/prime), det_time)
+		addtimer(CALLBACK(src,PROC_REF(prime)), det_time)
 	log_game("A grenade detonated at [AREACOORD(DT)]")
 
 

code/game/objects/items/grenades/clusterbuster.dm

@@ -57,7 +57,7 @@
 	var/steps = rand(1,4)
 	for(var/i in 1 to steps)
 		step_away(src,loc)
-	addtimer(CALLBACK(src, .proc/prime), rand(15,60))
+	addtimer(CALLBACK(src,PROC_REF(prime)), rand(15,60))
 
 /obj/item/grenade/clusterbuster/segment/prime()
 	new payload_spawner(drop_location(), payload, rand(min_spawned,max_spawned))

code/game/objects/items/grenades/grenade.dm

@@ -79,7 +79,7 @@
 	playsound(src, 'sound/weapons/armbomb.ogg', volume, 1)
 	active = TRUE
 	icon_state = initial(icon_state) + "_active"
-	addtimer(CALLBACK(src, .proc/prime), isnull(delayoverride)? det_time : delayoverride)
+	addtimer(CALLBACK(src,PROC_REF(prime)), isnull(delayoverride)? det_time : delayoverride)
 
 /obj/item/grenade/proc/prime()
 	var/turf/T = get_turf(src)

code/game/objects/items/grenades/plastic.dm

@@ -127,7 +127,7 @@
 		target.add_overlay(plastic_overlay, TRUE)
 		if(!nadeassembly)
 			to_chat(user, "<span class='notice'>You plant the bomb. Timer counting down from [det_time].</span>")
-			addtimer(CALLBACK(src, .proc/prime), det_time*10)
+			addtimer(CALLBACK(src,PROC_REF(prime)), det_time*10)
 		else
 			qdel(src)	//How?