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code/game/objects/items/pneumaticCannon.dm

@@ -84,7 +84,7 @@
 			updateTank(W, 0, user)
 	else if(W.type == type)
 		to_chat(user, "<span class='warning'>You're fairly certain that putting a pneumatic cannon inside another pneumatic cannon would cause a spacetime disruption.</span>")
-	else if(istype(W, /obj/item/wrench))
+	else if(W.tool_behaviour == TOOL_WRENCH)
 		switch(pressureSetting)
 			if(1)
 				pressureSetting = 2
@@ -93,7 +93,7 @@
 			if(3)
 				pressureSetting = 1
 		to_chat(user, "<span class='notice'>You tweak \the [src]'s pressure output to [pressureSetting].</span>")
-	else if(istype(W, /obj/item/screwdriver))
+	else if(W.tool_behaviour == TOOL_SCREWDRIVER)
 		if(tank)
 			updateTank(tank, 1, user)
 	else if(loadedWeightClass >= maxWeightClass)