diff --git a/code/controllers/subsystem/processing/instruments.dm b/code/controllers/subsystem/processing/instruments.dm
index c657bef84214..2bfeb719da17 100644
--- a/code/controllers/subsystem/processing/instruments.dm
+++ b/code/controllers/subsystem/processing/instruments.dm
@@ -34,7 +34,7 @@ PROCESSING_SUBSYSTEM_DEF(instruments)
 	songs -= S
 
 /datum/controller/subsystem/processing/instruments/proc/initialize_instrument_data()
-	for(var/datum/instrument/I in subtypesof(/datum/instrument))
+	for(var/datum/instrument/I as anything in subtypesof(/datum/instrument))
 		if(isabstract(I))
 			continue
 		I = new