diff --git a/MMOItems-API/pom.xml b/MMOItems-API/pom.xml
index 6b4eaab5..ea159c41 100644
--- a/MMOItems-API/pom.xml
+++ b/MMOItems-API/pom.xml
@@ -27,8 +27,8 @@
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.8.1</version>
                 <configuration>
-                    <source>16</source>
-                    <target>16</target>
+                    <source>1.8</source>
+                    <target>1.8</target>
                     <encoding>UTF-8</encoding>
                 </configuration>
             </plugin>
diff --git a/MMOItems-API/src/main/java/net/Indyuce/mmoitems/gui/CraftingStationPreview.java b/MMOItems-API/src/main/java/net/Indyuce/mmoitems/gui/CraftingStationPreview.java
index 1e6ab742..4c91ebcd 100644
--- a/MMOItems-API/src/main/java/net/Indyuce/mmoitems/gui/CraftingStationPreview.java
+++ b/MMOItems-API/src/main/java/net/Indyuce/mmoitems/gui/CraftingStationPreview.java
@@ -154,19 +154,21 @@ public class CraftingStationPreview extends PluginInventory {
 
 		NBTItem nbtItem = MythicLib.plugin.getVersion().getWrapper().getNBTItem(event.getCurrentItem());
 		switch (nbtItem.getString("ItemId")) {
-			case "CONFIRM" -> {
+			case "CONFIRM":
 				previous.processRecipe(recipe);
 				previous.open();
-			}
-			case "PREVIOUS_PAGE" -> {
+				return;
+			case "PREVIOUS_PAGE":
 				page--;
 				open();
-			}
-			case "NEXT_PAGE" -> {
+				return;
+			case "NEXT_PAGE":
 				page++;
 				open();
-			}
-			case "BACK" -> previous.open();
+				return;
+			case "BACK":
+				previous.open();
+				return;
 		}
 	}
 }
diff --git a/MMOItems-API/src/main/java/net/Indyuce/mmoitems/manager/EntityManager.java b/MMOItems-API/src/main/java/net/Indyuce/mmoitems/manager/EntityManager.java
index 37b29347..4c8a6bea 100644
--- a/MMOItems-API/src/main/java/net/Indyuce/mmoitems/manager/EntityManager.java
+++ b/MMOItems-API/src/main/java/net/Indyuce/mmoitems/manager/EntityManager.java
@@ -126,9 +126,10 @@ public class EntityManager implements Listener {
 
     @EventHandler(ignoreCancelled = true)
     public void onHitEffects(PlayerAttackEvent event) {
-        if (!(event.getAttack() instanceof ProjectileAttackMetadata projAttack))
+        if (!(event.getAttack() instanceof ProjectileAttackMetadata))
             return;
 
+        final ProjectileAttackMetadata projAttack = (ProjectileAttackMetadata) event.getAttack();
         final ProjectileData data = projectiles.get(projAttack.getProjectile().getEntityId());
         if (data == null)
             return;
diff --git a/MMOItems-API/src/main/java/net/Indyuce/mmoitems/util/RepairUtils.java b/MMOItems-API/src/main/java/net/Indyuce/mmoitems/util/RepairUtils.java
index 6793a482..1add6041 100644
--- a/MMOItems-API/src/main/java/net/Indyuce/mmoitems/util/RepairUtils.java
+++ b/MMOItems-API/src/main/java/net/Indyuce/mmoitems/util/RepairUtils.java
@@ -38,7 +38,7 @@ public class RepairUtils {
         final Player player = playerData.getPlayer();
         if (target.getBoolean("Unbreakable")
                 || !target.getItem().hasItemMeta()
-                || !(target.getItem().getItemMeta() instanceof Damageable meta)
+                || !(target.getItem().getItemMeta() instanceof Damageable)
                 || ((Damageable) target.getItem().getItemMeta()).getDamage() <= 0)
             return false;
 
@@ -48,6 +48,7 @@ public class RepairUtils {
             return false;
 
         repairAmount = called.getRepaired();
+        final Damageable meta = (Damageable) target.getItem().getItemMeta();
         meta.setDamage(Math.max(0, meta.getDamage() - repairAmount));
         target.getItem().setItemMeta(meta);
         Message.REPAIRED_ITEM.format(ChatColor.YELLOW,
diff --git a/pom.xml b/pom.xml
index 1dc6f684..ac242c36 100644
--- a/pom.xml
+++ b/pom.xml
@@ -62,8 +62,8 @@
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.8.1</version>
                 <configuration>
-                    <source>10</source>
-                    <target>10</target>
+                    <source>1.8</source>
+                    <target>1.8</target>
                     <encoding>UTF-8</encoding>
                 </configuration>
             </plugin>