diff --git a/src/script_pokemon_util.c b/src/script_pokemon_util.c
index e02da5b06e..a0bc7d8e16 100644
--- a/src/script_pokemon_util.c
+++ b/src/script_pokemon_util.c
@@ -299,10 +299,14 @@ u32 ScriptGiveMonParameterized(u16 species, u8 level, u16 item, u8 ball, u8 natu
     u16 targetSpecies;
 
     // check whether to use a specific nature or a random one
-    if (OW_SYNCHRONIZE_NATURE >= GEN_6 && (gSpeciesInfo[species].eggGroups[0] == EGG_GROUP_NO_EGGS_DISCOVERED || OW_SYNCHRONIZE_NATURE == GEN_7))
-        nature = PickWildMonNature();
-    else if (nature >= NUM_NATURES)
-        nature = Random() % NUM_NATURES;
+    if (nature >= NUM_NATURES)
+    {
+        if (OW_SYNCHRONIZE_NATURE >= GEN_6
+         && (gSpeciesInfo[species].eggGroups[0] == EGG_GROUP_NO_EGGS_DISCOVERED || OW_SYNCHRONIZE_NATURE == GEN_7))
+            nature = PickWildMonNature();
+        else
+            nature = Random() % NUM_NATURES;
+    }
 
     // create a Pokémon with basic data
     if ((gender == MON_MALE && genderRatio != MON_FEMALE && genderRatio != MON_GENDERLESS)