diff --git a/include/constants/pokedex.h b/include/constants/pokedex.h
index a0966a92de..4b821c68da 100644
--- a/include/constants/pokedex.h
+++ b/include/constants/pokedex.h
@@ -818,6 +818,7 @@ enum {
     NATIONAL_DEX_STAKATAKA,
     NATIONAL_DEX_BLACEPHALON,
     NATIONAL_DEX_ZERAORA,
+    // Unknown
     NATIONAL_DEX_MELTAN,
     NATIONAL_DEX_MELMETAL,
     // Galar