diff --git a/code/game/dna/dna_modifier.dm b/code/game/dna/dna_modifier.dm
index 383e485c6b2..3b1784a1fbc 100644
--- a/code/game/dna/dna_modifier.dm
+++ b/code/game/dna/dna_modifier.dm
@@ -355,7 +355,6 @@
 			if(prob(50))
 				qdel(src)
 				return
-		else
 	return
 
 /obj/machinery/computer/scan_consolenew/Initialize()
diff --git a/code/modules/client/preference_setup/vore/07_traits.dm b/code/modules/client/preference_setup/vore/07_traits.dm
index 661dee3fedb..039ccec0dd5 100644
--- a/code/modules/client/preference_setup/vore/07_traits.dm
+++ b/code/modules/client/preference_setup/vore/07_traits.dm
@@ -604,11 +604,11 @@ var/global/list/valid_bloodreagents = list("default",REAGENT_ID_IRON,REAGENT_ID_
 				tgui_alert_async(user, "The trait you've selected cannot be taken by the species you've chosen!", "Error")
 				return TOPIC_REFRESH
 
-			if((trait_choice in pref.pos_traits) + pref.neu_traits + pref.neg_traits)
+			if(trait_choice in (pref.pos_traits + pref.neu_traits + pref.neg_traits))
 				conflict = instance.name
 
 			varconflict:
-				for(var/P in pref.pos_traits + pref.neu_traits + pref.neg_traits)
+				for(var/P in (pref.pos_traits + pref.neu_traits + pref.neg_traits))
 					var/datum/trait/instance_test = all_traits[P]
 					if(path in instance_test.excludes)
 						conflict = instance_test.name
diff --git a/code/modules/integrated_electronics/core/special_pins/dir_pin.dm b/code/modules/integrated_electronics/core/special_pins/dir_pin.dm
index 139350b6fc3..9ce3699d1df 100644
--- a/code/modules/integrated_electronics/core/special_pins/dir_pin.dm
+++ b/code/modules/integrated_electronics/core/special_pins/dir_pin.dm
@@ -20,7 +20,7 @@
 		write_data_to_pin(new_data)
 
 /datum/integrated_io/dir/write_data_to_pin(var/new_data)
-	if(isnull(new_data) || ((new_data in alldirs) + list(UP, DOWN)))
+	if(isnull(new_data) || (new_data in (alldirs + list(UP, DOWN))))
 		data = new_data
 		holder.on_data_written()
 
diff --git a/code/modules/mob/living/silicon/robot/dogborg/dog_sleeper_vr.dm b/code/modules/mob/living/silicon/robot/dogborg/dog_sleeper_vr.dm
index 4fd9050c7fb..363b382a718 100644
--- a/code/modules/mob/living/silicon/robot/dogborg/dog_sleeper_vr.dm
+++ b/code/modules/mob/living/silicon/robot/dogborg/dog_sleeper_vr.dm
@@ -462,7 +462,7 @@
 
 /obj/item/dogborg/sleeper/proc/inject_chem(mob/user, chem)
 	if(patient && patient.reagents)
-		if((chem in injection_chems) + REAGENT_ID_INAPROVALINE)
+		if(chem in (injection_chems + REAGENT_ID_INAPROVALINE))
 			if(hound.cell.charge < 800) //This is so borgs don't kill themselves with it.
 				to_chat(hound, span_notice("You don't have enough power to synthesize fluids."))
 				return