diff --git a/src/egg_hatch.c b/src/egg_hatch.c
index e708360d9..1474d9de5 100644
--- a/src/egg_hatch.c
+++ b/src/egg_hatch.c
@@ -876,7 +876,9 @@ u8 GetEggCyclesToSubtract(void)
         if (!GetMonData(&gPlayerParty[i], MON_DATA_SANITY_IS_EGG))
         {
             u16 ability = GetMonAbility(&gPlayerParty[i]);
-            if (ability == ABILITY_MAGMA_ARMOR || ability == ABILITY_FLAME_BODY)
+            if (ability == ABILITY_MAGMA_ARMOR
+             || ability == ABILITY_FLAME_BODY
+             || ability == ABILITY_STEAM_ENGINE)
                 return 2;
         }
     }