diff --git a/src/data/egg.ts b/src/data/egg.ts
index 9beb944de69..508263c9c8e 100644
--- a/src/data/egg.ts
+++ b/src/data/egg.ts
@@ -15,7 +15,7 @@ export const EGG_SEED = 1073741824;
 // Rates for specific random properties in 1/x
 const DEFAULT_SHINY_RATE = 128;
 const GACHA_SHINY_UP_SHINY_RATE = 64;
-const SAME_SPECIES_EGG_SHINY_RATE = 24;
+const SAME_SPECIES_EGG_SHINY_RATE = 12;
 const SAME_SPECIES_EGG_HA_RATE = 8;
 const MANAPHY_EGG_MANAPHY_RATE = 8;
 const GACHA_EGG_HA_RATE = 192;