diff --git a/include/constants/species.h b/include/constants/species.h
index 3127f7f64..f7a6d9cca 100644
--- a/include/constants/species.h
+++ b/include/constants/species.h
@@ -812,8 +812,6 @@
 #define SPECIES_MELTAN 808
 #define SPECIES_MELMETAL 809
 
-#define IS_ULTRA_BEAST(speciesId)((speciesId >= SPECIES_NIHILEGO && speciesId <= SPECIES_GUZZLORD) || (speciesId >= SPECIES_POIPOLE && speciesId <= SPECIES_BLACEPHALON))
-
 #define FORMS_START SPECIES_MELMETAL
 
 // Megas