diff --git a/include/constants/battle_config.h b/include/constants/battle_config.h
index 0acede2522..f7b38000c2 100644
--- a/include/constants/battle_config.h
+++ b/include/constants/battle_config.h
@@ -35,7 +35,6 @@
     #define SPECIES_ZYGARDE                 0     // 50%
     #define SPECIES_ZYGARDE_10              10011 // 10 %
     #define SPECIES_ZYGARDE_COMPLETE        10012 // 100 %
-    #define SPECIES_MAROWAK_ALOLAN          0
 #endif
 
 // Items with peculiar battle effects.