diff --git a/src/battle_script_commands.c b/src/battle_script_commands.c
index 2e6b3dbaec..e0cb3e9415 100644
--- a/src/battle_script_commands.c
+++ b/src/battle_script_commands.c
@@ -11043,7 +11043,7 @@ static void atkEF_pokeball_catch_calculation(void)
                     ballMultiplier = 10;
                 break;
             case ITEM_NEST_BALL:
-                if (gBattleMons[gBankTarget].level <= 39)
+                if (gBattleMons[gBankTarget].level < 40)
                 {
                     ballMultiplier = 40 - gBattleMons[gBankTarget].level;
                     if (ballMultiplier <= 9)