diff --git a/code/modules/mob/living/simple_animal/bot/construction.dm b/code/modules/mob/living/simple_animal/bot/construction.dm
index a72b71be85..77df764b43 100644
--- a/code/modules/mob/living/simple_animal/bot/construction.dm
+++ b/code/modules/mob/living/simple_animal/bot/construction.dm
@@ -101,7 +101,7 @@
 
 		if(ASSEMBLY_FOURTH_STEP)
 			if(istype(W, /obj/item/weldingtool))
-				if(W.use_tool(src, user, 0, volume=40))
+				if(W.use_tool(src, user, 0, volume=40) && build_step == 4)
 					name = "shielded frame assembly"
 					to_chat(user, "<span class='notice'>You weld the vest to [src].</span>")
 					build_step++
@@ -183,7 +183,7 @@
 		if(8)
 			if(istype(W, /obj/item/screwdriver))
 				to_chat(user, "<span class='notice'>You start attaching the gun to the frame...</span>")
-				if(W.use_tool(src, user, 40, volume=100))
+				if(W.use_tool(src, user, 40, volume=100) && build_step == 8)
 					name = "armed [name]"
 					to_chat(user, "<span class='notice'>Taser gun attached.</span>")
 					build_step++