diff --git a/code/datums/ai_laws.dm b/code/datums/ai_laws.dm
index a96d2cbbc0..8d86507271 100644
--- a/code/datums/ai_laws.dm
+++ b/code/datums/ai_laws.dm
@@ -238,7 +238,7 @@
 /datum/ai_laws/proc/pick_weighted_lawset()
 	var/datum/ai_laws/lawtype
 	var/list/law_weights = CONFIG_GET(keyed_number_list/law_weight)
-	while(!lawtype && law_weights)
+	while(!lawtype && law_weights.len)
 		var/possible_id = pickweight(law_weights)
 		lawtype = lawid_to_type(possible_id)
 		if(!lawtype)