diff --git a/include/constants/pokemon.h b/include/constants/pokemon.h
index e87f8f822..9129f4a71 100644
--- a/include/constants/pokemon.h
+++ b/include/constants/pokemon.h
@@ -271,6 +271,7 @@
 
 // Evolution types
 #define EVO_MEGA_EVOLUTION                0xffff // Not an actual evolution, used to temporarily mega evolve in battle.
+#define EVO_MOVE_MEGA_EVOLUTION           0xfffe // Mega Evolution that checks for a move instead of held item.
 #define EVO_FRIENDSHIP                    1      // Pokémon levels up with friendship ≥ 220
 #define EVO_FRIENDSHIP_DAY                2      // Pokémon levels up during the day with friendship ≥ 220
 #define EVO_FRIENDSHIP_NIGHT              3      // Pokémon levels up at night with friendship ≥ 220