diff --git a/src/actionspecials.h b/src/actionspecials.h
index 5d9471fec..cd49504c3 100644
--- a/src/actionspecials.h
+++ b/src/actionspecials.h
@@ -12,7 +12,7 @@ DEFINE_SPECIAL(Door_Close, 10, 2, 3, 3)
 DEFINE_SPECIAL(Door_Open, 11, 2, 3, 3)
 DEFINE_SPECIAL(Door_Raise, 12, 3, 4, 4)
 DEFINE_SPECIAL(Door_LockedRaise, 13, 4, 5, 5)
-DEFINE_SPECIAL(Door_Animated, 14, 3, 3, 3)
+DEFINE_SPECIAL(Door_Animated, 14, 4, 4, 4)
 DEFINE_SPECIAL(Autosave, 15, 0, 0, 0)   // [RH] Save the game *now*
 DEFINE_SPECIAL(Transfer_WallLight, 16, -1, -1, 2)
 DEFINE_SPECIAL(Thing_Raise, 17, 1, 1, 1)
diff --git a/src/p_lnspec.cpp b/src/p_lnspec.cpp
index db2214ec7..cf79e376b 100644
--- a/src/p_lnspec.cpp
+++ b/src/p_lnspec.cpp
@@ -189,8 +189,11 @@ FUNC(LS_Door_CloseWaitOpen)
 }
 
 FUNC(LS_Door_Animated)
-// Door_Animated (tag, speed, delay)
+// Door_Animated (tag, speed, delay, lock)
 {
+	if (arg3 != 0 && !P_CheckKeys (it, arg3, arg0 != 0))
+		return false;
+
 	return EV_SlidingDoor (ln, it, arg0, arg1, arg2);
 }