diff --git a/code/__DEFINES/machines.dm b/code/__DEFINES/machines.dm
index f0778989601..6e4d49aad9f 100644
--- a/code/__DEFINES/machines.dm
+++ b/code/__DEFINES/machines.dm
@@ -128,6 +128,6 @@
 #define AI_DISPLAY_MODE_BSOD 2
 
 // Door operations
-#define OPENING 1
-#define CLOSING 2
-#define MALF 3
+#define DOOR_OPENING 1
+#define DOOR_CLOSING 2
+#define DOOR_MALF 3
diff --git a/code/game/area/areas.dm b/code/game/area/areas.dm
index ade1cc16c56..94e81f2d785 100644
--- a/code/game/area/areas.dm
+++ b/code/game/area/areas.dm
@@ -155,7 +155,7 @@
 		D.activate_alarm()
 		if(D.welded)
 			continue
-		if(D.operating && D.operating != CLOSING)
+		if(D.operating && D.operating != DOOR_CLOSING)
 			D.nextstate = FD_CLOSED
 		else if(!D.density)
 			INVOKE_ASYNC(D, /obj/machinery/door/firedoor.proc/close)
@@ -170,7 +170,7 @@
 		D.deactivate_alarm()
 		if(D.welded)
 			continue
-		if(D.operating && D.operating != OPENING)
+		if(D.operating && D.operating != DOOR_OPENING)
 			D.nextstate = FD_OPEN
 		else if(D.density)
 			INVOKE_ASYNC(D, /obj/machinery/door/firedoor.proc/open)
@@ -256,7 +256,7 @@
 		if(D.welded)
 			continue // Alarm is toggled, but door stuck
 		if(D.operating)
-			if((D.operating == OPENING && opening) || (D.operating == CLOSING && !opening))
+			if((D.operating == DOOR_OPENING && opening) || (D.operating == DOOR_CLOSING && !opening))
 				continue
 			else
 				D.nextstate = opening ? FD_OPEN : FD_CLOSED
diff --git a/code/game/machinery/doors/airlock.dm b/code/game/machinery/doors/airlock.dm
index 7c528469aee..137e19562c7 100644
--- a/code/game/machinery/doors/airlock.dm
+++ b/code/game/machinery/doors/airlock.dm
@@ -1233,7 +1233,7 @@ GLOBAL_LIST_EMPTY(airlock_emissive_underlays)
 	if(!density)
 		return TRUE
 	SEND_SIGNAL(src, COMSIG_AIRLOCK_OPEN)
-	operating = OPENING
+	operating = DOOR_OPENING
 	update_icon(AIRLOCK_OPENING, 1)
 	sleep(1)
 	set_opacity(0)
@@ -1274,7 +1274,7 @@ GLOBAL_LIST_EMPTY(airlock_emissive_underlays)
 		killthis.ex_act(EXPLODE_HEAVY)//Smashin windows
 
 	SEND_SIGNAL(src, COMSIG_AIRLOCK_CLOSE)
-	operating = CLOSING
+	operating = DOOR_CLOSING
 	update_icon(AIRLOCK_CLOSING, 1)
 	layer = CLOSED_DOOR_LAYER
 	if(!override)
@@ -1326,7 +1326,7 @@ GLOBAL_LIST_EMPTY(airlock_emissive_underlays)
 
 /obj/machinery/door/airlock/emag_act(mob/user)
 	if(!operating && density && arePowerSystemsOn() && !emagged)
-		operating = MALF
+		operating = DOOR_MALF
 		update_icon(AIRLOCK_EMAG, 1)
 		sleep(6)
 		if(QDELETED(src))
@@ -1341,7 +1341,7 @@ GLOBAL_LIST_EMPTY(airlock_emissive_underlays)
 /obj/machinery/door/airlock/cmag_act(mob/user)
 	if(operating || HAS_TRAIT(src, TRAIT_CMAGGED) || !density || !arePowerSystemsOn())
 		return
-	operating = MALF
+	operating = DOOR_MALF
 	update_icon(AIRLOCK_EMAG, 1)
 	sleep(6)
 	if(QDELETED(src))
diff --git a/code/game/machinery/doors/door.dm b/code/game/machinery/doors/door.dm
index b1d2dfcc765..0c442fd217e 100644
--- a/code/game/machinery/doors/door.dm
+++ b/code/game/machinery/doors/door.dm
@@ -383,7 +383,7 @@
 	if(operating)
 		return
 	SEND_SIGNAL(src, COMSIG_DOOR_OPEN)
-	operating = OPENING
+	operating = DOOR_OPENING
 	do_animate("opening")
 	set_opacity(0)
 	sleep(5)
@@ -413,7 +413,7 @@
 					return
 
 	SEND_SIGNAL(src, COMSIG_DOOR_CLOSE)
-	operating = CLOSING
+	operating = DOOR_CLOSING
 
 	do_animate("closing")
 	layer = closingLayer
diff --git a/code/game/machinery/doors/windowdoor.dm b/code/game/machinery/doors/windowdoor.dm
index 1fa09aedacd..2f48b5f461f 100644
--- a/code/game/machinery/doors/windowdoor.dm
+++ b/code/game/machinery/doors/windowdoor.dm
@@ -169,7 +169,7 @@
 		if(emagged)
 			return 0
 	if(!operating) //in case of emag
-		operating = OPENING
+		operating = DOOR_OPENING
 	do_animate("opening")
 	set_opacity(FALSE)
 	playsound(loc, 'sound/machines/windowdoor.ogg', 100, 1)
@@ -194,7 +194,7 @@
 	if(forced < 2)
 		if(emagged)
 			return 0
-	operating = CLOSING
+	operating = DOOR_CLOSING
 	do_animate("closing")
 	playsound(loc, 'sound/machines/windowdoor.ogg', 100, 1)
 	icon_state = base_state
@@ -252,7 +252,7 @@
 /obj/machinery/door/window/emag_act(mob/user, obj/weapon)
 	if(!operating && density && !emagged)
 		emagged = TRUE
-		operating = MALF
+		operating = DOOR_MALF
 		electronics = new /obj/item/airlock_electronics/destroyed()
 		flick("[base_state]spark", src)
 		playsound(src, "sparks", 75, TRUE, SHORT_RANGE_SOUND_EXTRARANGE)
@@ -265,7 +265,7 @@
 	if(operating || !density || HAS_TRAIT(src, TRAIT_CMAGGED))
 		return
 	ADD_TRAIT(src, TRAIT_CMAGGED, "clown_emag")
-	operating = MALF
+	operating = DOOR_MALF
 	flick("[base_state]spark", src)
 	playsound(src, "sparks", 75, TRUE, SHORT_RANGE_SOUND_EXTRARANGE)
 	sleep(6)