diff --git a/src/pokedex.c b/src/pokedex.c
index 238d4188171..57a2ccdcd19 100644
--- a/src/pokedex.c
+++ b/src/pokedex.c
@@ -3996,7 +3996,8 @@ u8 DisplayCaughtMonDexPage(u16 species, u32 otId, u32 personality)
 static void Task_DisplayCaughtMonDexPage(u8 taskId)
 {
     u8 spriteId;
-    u16 dexNum = SpeciesToNationalPokedexNum(gTasks[taskId].tSpecies);
+    u16 species = gTasks[taskId].tSpecies;
+    u16 dexNum = SpeciesToNationalPokedexNum(species);
 
     switch (gTasks[taskId].tState)
     {
@@ -4022,7 +4023,7 @@ static void Task_DisplayCaughtMonDexPage(u8 taskId)
         FillWindowPixelBuffer(WIN_INFO, PIXEL_FILL(0));
         PutWindowTilemap(WIN_INFO);
         PutWindowTilemap(WIN_FOOTPRINT);
-        DrawFootprint(WIN_FOOTPRINT, dexNum);
+        DrawFootprint(WIN_FOOTPRINT, species);
         CopyWindowToVram(WIN_FOOTPRINT, COPYWIN_GFX);
         ResetPaletteFade();
         LoadPokedexBgPalette(FALSE);
@@ -4039,7 +4040,7 @@ static void Task_DisplayCaughtMonDexPage(u8 taskId)
         gTasks[taskId].tState++;
         break;
     case 4:
-        spriteId = CreateMonPicSprite(NationalPokedexNumToSpecies(dexNum), 0, ((u16)gTasks[taskId].tPersonalityHi << 16) | (u16)gTasks[taskId].tPersonalityLo, TRUE, MON_PAGE_X, MON_PAGE_Y, 0, TAG_NONE);
+        spriteId = CreateMonPicSprite(species, FALSE, ((u16)gTasks[taskId].tPersonalityHi << 16) | (u16)gTasks[taskId].tPersonalityLo, TRUE, MON_PAGE_X, MON_PAGE_Y, 0, TAG_NONE);
         gSprites[spriteId].oam.priority = 0;
         BeginNormalPaletteFade(PALETTES_ALL, 0, 0x10, 0, RGB_BLACK);
         SetVBlankCallback(gPokedexVBlankCB);
@@ -4058,7 +4059,7 @@ static void Task_DisplayCaughtMonDexPage(u8 taskId)
     case 6:
         if (!gPaletteFade.active)
         {
-            PlayCry_Normal(NationalPokedexNumToSpecies(dexNum), 0);
+            PlayCry_Normal(species, 0);
             gTasks[taskId].tPalTimer = 0;
             gTasks[taskId].func = Task_HandleCaughtMonPageInput;
         }
diff --git a/src/pokedex_plus_hgss.c b/src/pokedex_plus_hgss.c
index a1c8b795f5d..3ff358f384f 100644
--- a/src/pokedex_plus_hgss.c
+++ b/src/pokedex_plus_hgss.c
@@ -4206,7 +4206,7 @@ void Task_DisplayCaughtMonDexPageHGSS(u8 taskId)
     case 6:
         if (!gPaletteFade.active)
         {
-            PlayCry_Normal(NationalPokedexNumToSpeciesHGSS(dexNum), 0);
+            PlayCry_Normal(species, 0);
             gTasks[taskId].tPalTimer = 0;
             gTasks[taskId].func = Task_HandleCaughtMonPageInput;
         }
diff --git a/src/pokemon.c b/src/pokemon.c
index ee3cc643b84..e484bfc7d70 100644
--- a/src/pokemon.c
+++ b/src/pokemon.c
@@ -4217,6 +4217,7 @@ u16 NationalToHoennOrder(u16 nationalNum)
 
 u16 SpeciesToNationalPokedexNum(u16 species)
 {
+    species = SanitizeSpeciesId(species);
     if (!species)
         return NATIONAL_DEX_NONE;