diff --git a/code/modules/mob/living/basic/pets/parrot/poly.dm b/code/modules/mob/living/basic/pets/parrot/poly.dm
index 88885ad8861..cef0a445acd 100644
--- a/code/modules/mob/living/basic/pets/parrot/poly.dm
+++ b/code/modules/mob/living/basic/pets/parrot/poly.dm
@@ -7,7 +7,7 @@
 /// Poly has only just survived a round, and is doing a consecutive one.
 #define POLY_CONSECUTIVE_ROUND "consecutive_round"
 /// haunt filter we apply to who we possess
-#define POLY_POSSESS_FILTER
+#define POLY_POSSESS_FILTER "poly_possess_filter"
 /// haunt filter color we apply to who we possess
 #define POLY_POSSESS_GLOW "#522059"