diff --git a/code/modules/reagents/chemistry/machinery/chem_master.dm b/code/modules/reagents/chemistry/machinery/chem_master.dm
index 6e34d4404ce..56752286676 100644
--- a/code/modules/reagents/chemistry/machinery/chem_master.dm
+++ b/code/modules/reagents/chemistry/machinery/chem_master.dm
@@ -173,7 +173,7 @@
 /obj/machinery/chem_master/wrench_act(mob/user, obj/item/I)
 	if(panel_open)
 		return
-	default_unfasten_wrench(user, I, 4 SECONDS)
+	return default_unfasten_wrench(user, I, 4 SECONDS)
 
 /obj/machinery/chem_master/ui_act(action, params, datum/tgui/ui, datum/ui_state/state)
 	if(..())