diff --git a/source/games/duke/src/actors.cpp b/source/games/duke/src/actors.cpp
index dbda88df1..13e7f9e8f 100644
--- a/source/games/duke/src/actors.cpp
+++ b/source/games/duke/src/actors.cpp
@@ -5313,6 +5313,7 @@ void movefta(void)
 					act->spr.shade = act->sector()->ceilingshade;
 				else act->spr.shade = act->sector()->floorshade;
 
+				// wakeup is an RR feature, this flag will later allow it to use in Duke, too.
 				if (actorflag(act, SFLAG2_MOVEFTA_WAKEUPCHECK))
 				{
 					if (wakeup(act, p))
diff --git a/source/games/duke/src/flags_r.cpp b/source/games/duke/src/flags_r.cpp
index 5a3ac51b0..3832adedc 100644
--- a/source/games/duke/src/flags_r.cpp
+++ b/source/games/duke/src/flags_r.cpp
@@ -227,10 +227,14 @@ void initactorflags_r()
 		NUKEBARRELLEAKED 
 		});
 
-	setflag(SFLAG2_MOVEFTA_WAKEUPCHECK, { HEN, COW, PIG, DOGRUN });
+	// Animals were not supposed to have this, but due to a coding bug the logic was unconditional for everything in the game.
+	for (auto& ainf : gs.actorinfo)
+	{
+		ainf.flags2 |= SFLAG2_MOVEFTA_WAKEUPCHECK;
+	}
+
 	if (isRRRA())
 	{
-		setflag(SFLAG2_MOVEFTA_WAKEUPCHECK, { RABBIT });
 		setflag(SFLAG2_MOVEFTA_CHECKSEEWITHPAL8, { MINION });
 	}