diff --git a/code/game/gamemodes/malfunction/malf_hardware.dm b/code/game/gamemodes/malfunction/malf_hardware.dm
index da12528712c..fab329ff583 100644
--- a/code/game/gamemodes/malfunction/malf_hardware.dm
+++ b/code/game/gamemodes/malfunction/malf_hardware.dm
@@ -11,7 +11,7 @@
 			owner.verbs += driver
 
 /datum/malf_hardware/proc/get_examine_desc()
-	return "It has some sort of hardware attached to it's core"
+	return "It has some sort of hardware attached to its core"
 
 
 
diff --git a/code/game/gamemodes/malfunction/newmalf_ability_trees/tree_manipulation.dm b/code/game/gamemodes/malfunction/newmalf_ability_trees/tree_manipulation.dm
index f854b582d84..04ee0a84482 100644
--- a/code/game/gamemodes/malfunction/newmalf_ability_trees/tree_manipulation.dm
+++ b/code/game/gamemodes/malfunction/newmalf_ability_trees/tree_manipulation.dm
@@ -111,7 +111,7 @@
 				return
 
 
-/datum/game_mode/malfunction/verb/emergency_forcefield(var/turf/T as null|turf in world)
+/datum/game_mode/malfunction/verb/emergency_forcefield(var/turf/T as turf in world)
 	set name = "Emergency Forcefield"
 	set desc = "275 CPU - Uses station's emergency shielding system to create temporary barrier which lasts for few minutes, but won't resist gunfire."
 	set category = "Software"
@@ -172,6 +172,7 @@
 			return
 		if(M.inoperable()) // Not functional
 			user << "<span class='notice'>ERROR: Unknown error. Machine is probably damaged or power supply is nonfunctional.</span>"
+			return
 	else // Not a machine at all (what the hell is this doing in Machines list anyway??)
 		user << "<span class='notice'>ERROR: Unable to overload - target is not a machine.</span>"
 		return
diff --git a/code/game/gamemodes/malfunction/newmalf_ability_trees/tree_networking.dm b/code/game/gamemodes/malfunction/newmalf_ability_trees/tree_networking.dm
index f3bef399ad7..9c3c584d9e4 100644
--- a/code/game/gamemodes/malfunction/newmalf_ability_trees/tree_networking.dm
+++ b/code/game/gamemodes/malfunction/newmalf_ability_trees/tree_networking.dm
@@ -174,7 +174,7 @@
 				return
 			command_announcement.Announce("We have traced the intrude#, it seem& t( e yo3r AI s7stem, it &# *#ck@ng th$ sel$ destru$t mechani&m, stop i# bef*@!)$#&&@@  <CONNECTION LOST>", "Network Monitoring")
 	else
-		command_announcement.Announce("We have detected strong brute-force attack on your firewall which seems to be originating from your AI system. It already controls almost whole network, and the only thing that's preventing it from accessing the self-destruct is this firewall. You don't have much time before it succeeds.", "Network Monitoring")
+		command_announcement.Announce("We have detected a strong brute-force attack on your firewall which seems to be originating from your AI system. It already controls almost the whole network, and the only thing that's preventing it from accessing the self-destruct is this firewall. You don't have much time before it succeeds.", "Network Monitoring")
 	user << "## BEGINNING SYSTEM OVERRIDE."
 	user << "## ESTIMATED DURATION: [round((duration+300)/600)] MINUTES"
 	user.hacking = 1
@@ -199,7 +199,7 @@
 
 
 	user << "## PRIMARY FIREWALL BYPASSED. YOU NOW HAVE FULL SYSTEM CONTROL."
-	command_announcement.Announce("Our system administrators just reported that we've been locked out from your control network. Whoever did this now has full access to station's systems.", "Network Administration Center")
+	command_announcement.Announce("Our system administrators just reported that we've been locked out from your control network. Whoever did this now has full access to the station's systems.", "Network Administration Center")
 	user.hack_can_fail = 0
 	user.hacking = 0
 	user.system_override = 2
diff --git a/code/modules/mob/living/silicon/ai/life.dm b/code/modules/mob/living/silicon/ai/life.dm
index 225b2bf6ead..5e0b0589c53 100644
--- a/code/modules/mob/living/silicon/ai/life.dm
+++ b/code/modules/mob/living/silicon/ai/life.dm
@@ -25,7 +25,7 @@
 				src.reset_view(null)
 
 		// Handle power damage (oxy)
-		if(src:aiRestorePowerRoutine != 0 && !APU_power)
+		if(aiRestorePowerRoutine != 0 && !APU_power)
 			// Lose power
 			adjustOxyLoss(1)
 		else
@@ -99,7 +99,7 @@
 						if (loc.power_equip)
 							if (!istype(T, /turf/space))
 								src << "Alert cancelled. Power has been restored without our assistance."
-								src:aiRestorePowerRoutine = 0
+								aiRestorePowerRoutine = 0
 								src.blind.layer = 0
 								return
 						src << "Fault confirmed: missing external power. Shutting down main control system to save power."
@@ -108,7 +108,7 @@
 						sleep(50)
 						if (istype(T, /turf/space))
 							src << "Unable to verify! No power connection detected!"
-							src:aiRestorePowerRoutine = 2
+							aiRestorePowerRoutine = 2
 							return
 						src << "Connection verified. Searching for APC in power network."
 						sleep(50)
@@ -129,7 +129,7 @@
 							if (loc.power_equip)
 								if (!istype(T, /turf/space))
 									src << "Alert cancelled. Power has been restored without our assistance."
-									src:aiRestorePowerRoutine = 0
+									aiRestorePowerRoutine = 0
 									src.blind.layer = 0 //This, too, is a fix to issue 603
 									return
 							switch(PRP)
@@ -146,7 +146,7 @@
 									theAPC.update()
 									aiRestorePowerRoutine = 3
 									src << "Here are your current laws:"
-									src.show_laws()
+									show_laws()
 							sleep(50)
 							theAPC = null