diff --git a/include/pokemon.h b/include/pokemon.h
index 0d27d5cb1b..40de3f023e 100644
--- a/include/pokemon.h
+++ b/include/pokemon.h
@@ -911,7 +911,7 @@ const u8 *GetMoveAnimationScript(u16 moveId);
 void UpdateDaysPassedSinceFormChange(u16 days);
 void TrySetDayLimitToFormChange(struct Pokemon *mon);
 u32 CheckDynamicMoveType(struct Pokemon *mon, u32 move, u32 battler);
-u16 GetRegionalForm(u32 species, u32 region);
+u32 GetRegionalForm(u32 species, u32 region);
 bool32 IsSpeciesForeignRegionalForm(u32 species, u32 currentRegion);
 
 #endif // GUARD_POKEMON_H
diff --git a/src/daycare.c b/src/daycare.c
index 2fdbe3c7ef..d479954aa0 100644
--- a/src/daycare.c
+++ b/src/daycare.c
@@ -1002,8 +1002,8 @@ static u16 DetermineEggSpeciesAndParentSlots(struct DayCare *daycare, u8 *parent
 
     motherEggSpecies = GetEggSpecies(species[parentSlots[0]]);
     fatherEggSpecies = GetEggSpecies(species[parentSlots[1]]);
-    hasMotherEverstone = ItemId_GetHoldEffect(GetBoxMonData(&daycare->mons[0].mon, MON_DATA_HELD_ITEM)) == HOLD_EFFECT_PREVENT_EVOLVE;
-    hasFatherEverstone = ItemId_GetHoldEffect(GetBoxMonData(&daycare->mons[1].mon, MON_DATA_HELD_ITEM)) == HOLD_EFFECT_PREVENT_EVOLVE;
+    hasMotherEverstone = ItemId_GetHoldEffect(GetBoxMonData(&daycare->mons[parentSlots[0]].mon, MON_DATA_HELD_ITEM)) == HOLD_EFFECT_PREVENT_EVOLVE;
+    hasFatherEverstone = ItemId_GetHoldEffect(GetBoxMonData(&daycare->mons[parentSlots[1]].mon, MON_DATA_HELD_ITEM)) == HOLD_EFFECT_PREVENT_EVOLVE;
     motherIsForeign = IsSpeciesForeignRegionalForm(motherEggSpecies, REGION_CURRENT);
     fatherIsForeign = IsSpeciesForeignRegionalForm(fatherEggSpecies, REGION_CURRENT);
 
diff --git a/src/pokemon.c b/src/pokemon.c
index ab6a397be7..ac54593407 100644
--- a/src/pokemon.c
+++ b/src/pokemon.c
@@ -6979,22 +6979,29 @@ u32 CheckDynamicMoveType(struct Pokemon *mon, u32 move, u32 battler)
     return gMovesInfo[move].type;
 }
 
-u16 GetRegionalForm(u32 species, u32 region)
+u32 GetRegionalForm(u32 species, u32 region)
 {
     u32 formId = 0;
-    u32 foundSpecies = 0;
+    u32 firstFoundSpecies = 0;
+    const u16 *formTable = GetSpeciesFormTable(species);
 
-    if (GetSpeciesFormTable(species) != NULL)
+    if (formTable != NULL)
     {
-        for (formId = 0; GetSpeciesFormTable(species)[formId] != FORM_SPECIES_END; formId++)
+        for (formId = 0; formTable[formId] != FORM_SPECIES_END; formId++)
         {
-            foundSpecies = GetSpeciesFormTable(species)[formId];
-            if ((gSpeciesInfo[foundSpecies].isAlolanForm   && region == REGION_ALOLA)
-             || (gSpeciesInfo[foundSpecies].isGalarianForm && region == REGION_GALAR)
-             || (gSpeciesInfo[foundSpecies].isHisuianForm  && region == REGION_HISUI)
-             || (gSpeciesInfo[foundSpecies].isPaldeanForm  && region == REGION_PALDEA))
-                return foundSpecies;
+            if (firstFoundSpecies == 0)
+                firstFoundSpecies = formTable[formId];
+            
+            if ((gSpeciesInfo[formTable[formId]].isAlolanForm   && region == REGION_ALOLA)
+             || (gSpeciesInfo[formTable[formId]].isGalarianForm && region == REGION_GALAR)
+             || (gSpeciesInfo[formTable[formId]].isHisuianForm  && region == REGION_HISUI)
+             || (gSpeciesInfo[formTable[formId]].isPaldeanForm  && region == REGION_PALDEA))
+            {
+                return formTable[formId];
+            }
         }
+        if (firstFoundSpecies != 0)
+            return firstFoundSpecies;
     }
     return species;
 }
diff --git a/test/daycare.c b/test/daycare.c
index 20af0fb501..7dc6a6d789 100644
--- a/test/daycare.c
+++ b/test/daycare.c
@@ -64,3 +64,26 @@ TEST("Daycare Pokémon can breed with Ditto if they don't belong to the Ditto or
         EXPECT_EQ(GetMonData(&gPlayerParty[0], MON_DATA_SPECIES), SPECIES_NONE);
 
 }
+
+TEST("Daycare Pokémon with regional forms give the correct offspring")
+{
+    u32 offspring = 0;
+    ASSUME(P_FAMILY_MEOWTH == TRUE);
+    ASSUME(P_ALOLAN_FORMS == TRUE);
+    ASSUME(P_GALARIAN_FORMS == TRUE);
+    ASSUME(REGION_CURRENT == REGION_HOENN);
+
+    ZeroPlayerPartyMons();
+    PARAMETRIZE { offspring = SPECIES_MEOWTH;       RUN_OVERWORLD_SCRIPT(givemon SPECIES_MEOWTH,  1, gender=MON_MALE; givemon SPECIES_MEOWTH_ALOLA, 1, gender=MON_FEMALE;); }
+    PARAMETRIZE { offspring = SPECIES_MEOWTH_ALOLA; RUN_OVERWORLD_SCRIPT(givemon SPECIES_MEOWTH,  1, gender=MON_MALE; givemon SPECIES_MEOWTH_ALOLA, 1, gender=MON_FEMALE, item=ITEM_EVERSTONE;); }
+    PARAMETRIZE { offspring = SPECIES_MEOWTH;       RUN_OVERWORLD_SCRIPT(givemon SPECIES_MEOWTH,  1, gender=MON_MALE; givemon SPECIES_MEOWTH_GALAR, 1, gender=MON_FEMALE;); }
+    PARAMETRIZE { offspring = SPECIES_MEOWTH_GALAR; RUN_OVERWORLD_SCRIPT(givemon SPECIES_MEOWTH,  1, gender=MON_MALE; givemon SPECIES_MEOWTH_GALAR, 1, gender=MON_FEMALE, item=ITEM_EVERSTONE;); }
+    // Cases provided by cawtds
+    PARAMETRIZE { offspring = SPECIES_MEOWTH;       RUN_OVERWORLD_SCRIPT(givemon SPECIES_DIGLETT, 1, gender=MON_MALE; givemon SPECIES_MEOWTH_GALAR, 1, gender=MON_FEMALE;); }
+    PARAMETRIZE { offspring = SPECIES_MEOWTH_GALAR; RUN_OVERWORLD_SCRIPT(givemon SPECIES_DIGLETT, 1, gender=MON_MALE; givemon SPECIES_MEOWTH_GALAR, 1, gender=MON_FEMALE, item=ITEM_EVERSTONE;); }
+    PARAMETRIZE { offspring = SPECIES_MEOWTH_GALAR; RUN_OVERWORLD_SCRIPT(givemon SPECIES_PERRSERKER, 1, gender=MON_MALE, item=ITEM_EVERSTONE; givemon SPECIES_PERSIAN, 1, gender=MON_FEMALE;); }
+    //PARAMETRIZE { offspring = SPECIES_MEOWTH;       RUN_OVERWORLD_SCRIPT(givemon SPECIES_PERRSERKER, 1, gender=MON_MALE, item=ITEM_EVERSTONE; givemon SPECIES_PERSIAN, 1, gender=MON_FEMALE, item=ITEM_EVERSTONE;); }
+    STORE_IN_DAYCARE_AND_GET_EGG();
+
+    EXPECT_EQ(GetMonData(&gPlayerParty[0], MON_DATA_SPECIES), offspring);
+}