diff --git a/src/decompress.c b/src/decompress.c
index 028679a5b4..a1f92da2c1 100644
--- a/src/decompress.c
+++ b/src/decompress.c
@@ -128,7 +128,7 @@ static void LoadSpecialPokePicCustom(const struct CompressedSpriteSheet *src, vo
     }
     else if (species > NUM_SPECIES) // is species unknown? draw the ? icon
         LZ77UnCompWram(gMonFrontPicTable[0].data, dest);
-    else if (SpeciesHasGenderDifference[species] && isFemale)
+    else if ((gBaseStats[species].flags & FLAG_GENDER_DIFFERENCE) && isFemale)
     {
         if (isFrontPic)
             LZ77UnCompWram(gMonFrontPicTableFemale[species].data, dest);
diff --git a/src/pokemon_debug.c b/src/pokemon_debug.c
index d43120e6a5..5c1cf94908 100644
--- a/src/pokemon_debug.c
+++ b/src/pokemon_debug.c
@@ -417,21 +417,21 @@ static void PrintInstructionsOnWindow(struct PokemonDebugMenu *data)
     FillWindowPixelBuffer(WIN_INSTRUCTIONS, 0x11);
     if (data->currentSubmenu == 0)
     {
-        if (SpeciesHasGenderDifference[species])
+        if (gBaseStats[species].flags & FLAG_GENDER_DIFFERENCE)
             AddTextPrinterParameterized(WIN_INSTRUCTIONS, fontId, textInstructionsGender, x, 0, 0, NULL);
         else
             AddTextPrinterParameterized(WIN_INSTRUCTIONS, fontId, textInstructions, x, 0, 0, NULL);
     }
     else if (data->currentSubmenu == 1)
     {
-        if (SpeciesHasGenderDifference[species])
+        if (gBaseStats[species].flags & FLAG_GENDER_DIFFERENCE)
             AddTextPrinterParameterized(WIN_INSTRUCTIONS, fontId, textInstructionsSubmenuOneGender, x, 0, 0, NULL);
         else
             AddTextPrinterParameterized(WIN_INSTRUCTIONS, fontId, textInstructionsSubmenuOne, x, 0, 0, NULL);
     }
     else if (data->currentSubmenu == 2)
     {
-        if (SpeciesHasGenderDifference[species])
+        if (gBaseStats[species].flags & FLAG_GENDER_DIFFERENCE)
             AddTextPrinterParameterized(WIN_INSTRUCTIONS, fontId, textInstructionsSubmenuTwoGender, x, 0, 0, NULL);
         else
             AddTextPrinterParameterized(WIN_INSTRUCTIONS, fontId, textInstructionsSubmenuTwo, x, 0, 0, NULL);
@@ -485,7 +485,7 @@ static void PrintDigitChars(struct PokemonDebugMenu *data)
     text[i++] = CHAR_SPACE;
     text[i++] = CHAR_HYPHEN;
 
-    if (SpeciesHasGenderDifference[species])
+    if (gBaseStats[species].flags & FLAG_GENDER_DIFFERENCE)
     {
         if (data->isFemale)
             text[i++] = CHAR_FEMALE;
@@ -688,14 +688,14 @@ static const struct CompressedSpritePalette *GetMonSpritePalStructCustom(u16 spe
 {
     if (isShiny)
     {
-        if (SpeciesHasGenderDifference[species] && isFemale)
+        if ((gBaseStats[species].flags & FLAG_GENDER_DIFFERENCE) && isFemale)
             return &gMonShinyPaletteTableFemale[species];
         else
             return &gMonShinyPaletteTable[species];
     }
     else
     {
-        if (SpeciesHasGenderDifference[species] && isFemale)
+        if ((gBaseStats[species].flags & FLAG_GENDER_DIFFERENCE) && isFemale)
             return &gMonPaletteTableFemale[species];
         else
             return &gMonPaletteTable[species];
@@ -714,14 +714,14 @@ static void BattleLoadOpponentMonSpriteGfxCustom(u16 species, bool8 isFemale, bo
 
     if (isShiny)
     {
-        if (SpeciesHasGenderDifference[species] && isFemale)
+        if ((gBaseStats[species].flags & FLAG_GENDER_DIFFERENCE) && isFemale)
             lzPaletteData = gMonShinyPaletteTableFemale[species].data;
         else
             lzPaletteData = gMonShinyPaletteTable[species].data;
     }
     else
     {
-        if (SpeciesHasGenderDifference[species] && isFemale)
+        if ((gBaseStats[species].flags & FLAG_GENDER_DIFFERENCE) && isFemale)
             lzPaletteData = gMonPaletteTableFemale[species].data;
         else
             lzPaletteData = gMonPaletteTable[species].data;
@@ -1472,7 +1472,7 @@ static void Handle_Input_Debug_Pokemon(u8 taskId)
         ReloadPokemonSprites(data);
 
     }
-    if (JOY_NEW(SELECT_BUTTON) && SpeciesHasGenderDifference[data->currentmonId])
+    if (JOY_NEW(SELECT_BUTTON) && (gBaseStats[data->currentmonId].flags & FLAG_GENDER_DIFFERENCE))
     {
         data->isFemale = !data->isFemale;
         PrintDigitChars(data);
diff --git a/src/pokemon_icon.c b/src/pokemon_icon.c
index 7161e64ded..666330975e 100644
--- a/src/pokemon_icon.c
+++ b/src/pokemon_icon.c
@@ -2607,7 +2607,7 @@ u8 CreateMonIconCustom(u16 species, void (*callback)(struct Sprite *), s16 x, s1
 
     if (species > NUM_SPECIES)
         iconTemplate.paletteTag = POKE_ICON_BASE_PAL_TAG;
-    else if (SpeciesHasGenderDifference[species] && isFemale)
+    else if ((gBaseStats[species].flags & FLAG_GENDER_DIFFERENCE) && isFemale)
         iconTemplate.paletteTag = POKE_ICON_BASE_PAL_TAG + gMonIconPaletteIndicesFemale[species];
 
     spriteId = CreateMonIconSprite(&iconTemplate, x, y, subpriority);
@@ -2768,7 +2768,7 @@ const u8* GetMonIconTiles(u16 species, u32 personality)
 static const u8* GetMonIconTilesCustom(u16 species, bool8 isFemale)
 {
     const u8* iconSprite = gMonIconTable[species];
-    if (SpeciesHasGenderDifference[species] && isFemale)
+    if ((gBaseStats[species].flags & FLAG_GENDER_DIFFERENCE) && isFemale)
     {
         iconSprite = gMonIconTableFemale[species];
     }