diff --git a/src/main/java/net/minestom/server/item/metadata/PotionMeta.java b/src/main/java/net/minestom/server/item/metadata/PotionMeta.java
index 8deff8901..db2255560 100644
--- a/src/main/java/net/minestom/server/item/metadata/PotionMeta.java
+++ b/src/main/java/net/minestom/server/item/metadata/PotionMeta.java
@@ -12,7 +12,7 @@ import org.jglrxavpok.hephaistos.nbt.NBTCompound;
 import org.jglrxavpok.hephaistos.nbt.NBTList;
 import org.jglrxavpok.hephaistos.nbt.NBTTypes;
 
-import java.time.temporal.ChronoUnit;
+import java.time.Duration;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.function.Supplier;
@@ -98,7 +98,7 @@ public class PotionMeta extends ItemMeta implements ItemMetaBuilder.Provider<Pot
                 for (NBTCompound potionCompound : customEffectList) {
                     final byte id = potionCompound.getAsByte("Id");
                     final byte amplifier = potionCompound.getAsByte("Amplifier");
-                    final int duration = potionCompound.containsKey("Duration") ? potionCompound.getNumber("Duration").intValue() : (int) ChronoUnit.SECONDS.getDuration().multipliedBy(30).toMillis();
+                    final int duration = potionCompound.containsKey("Duration") ? potionCompound.getNumber("Duration").intValue() : (int) Duration.ofSeconds(30).toMillis();
                     final boolean ambient = potionCompound.containsKey("Ambient") ? potionCompound.getAsByte("Ambient") == 1 : false;
                     final boolean showParticles = potionCompound.containsKey("ShowParticles") ? potionCompound.getAsByte("ShowParticles") == 1 : true;
                     final boolean showIcon = potionCompound.containsKey("ShowIcon") ? potionCompound.getAsByte("ShowIcon") == 1 : true;
diff --git a/src/main/java/net/minestom/server/utils/time/TimeUnit.java b/src/main/java/net/minestom/server/utils/time/TimeUnit.java
index f6c188f6a..c03901dfa 100644
--- a/src/main/java/net/minestom/server/utils/time/TimeUnit.java
+++ b/src/main/java/net/minestom/server/utils/time/TimeUnit.java
@@ -1,5 +1,6 @@
 package net.minestom.server.utils.time;
 
+import java.time.Duration;
 import java.time.temporal.ChronoUnit;
 import java.time.temporal.TemporalUnit;
 
@@ -21,6 +22,6 @@ public class TimeUnit {
     }
 
     public static long getMillis(long amount, TemporalUnit unit) {
-        return unit.getDuration().multipliedBy(amount).toMillis();
+        return Duration.of(amount, unit).toMillis();
     }
 }