diff --git a/src/main/java/ca/tweetzy/vouchers/listeners/VoucherListeners.java b/src/main/java/ca/tweetzy/vouchers/listeners/VoucherListeners.java
index 26bd2ee..92e6c92 100644
--- a/src/main/java/ca/tweetzy/vouchers/listeners/VoucherListeners.java
+++ b/src/main/java/ca/tweetzy/vouchers/listeners/VoucherListeners.java
@@ -60,8 +60,8 @@ public void onVoucherRedeem(final PlayerInteractEvent event) {
 		if (event.getAction() == Action.RIGHT_CLICK_AIR || event.getAction() == Action.RIGHT_CLICK_BLOCK) {
 
 
-			final Voucher voucher = Vouchers.getVoucherManager().find(NBT.get(item, nbt -> nbt.getString("Tweetzy:Vouchers")));
-			final String voucherArgsRaw = NBT.get(item, nbt -> nbt.getString("Tweetzy:VouchersArgs"));
+			final Voucher voucher = Vouchers.getVoucherManager().find(NBT.get(item, nbt -> (String) nbt.getString("Tweetzy:Vouchers")));
+			final String voucherArgsRaw = NBT.get(item, nbt -> (String) nbt.getString("Tweetzy:VouchersArgs"));
 
 			final List<String> voucherArgs = voucherArgsRaw == null ? null : voucherArgsRaw.split(" ").length == 0 ? null : List.of(voucherArgsRaw.split(" "));
 
diff --git a/src/main/java/ca/tweetzy/vouchers/model/manager/VoucherManager.java b/src/main/java/ca/tweetzy/vouchers/model/manager/VoucherManager.java
index 50d8fdc..9b67cb2 100644
--- a/src/main/java/ca/tweetzy/vouchers/model/manager/VoucherManager.java
+++ b/src/main/java/ca/tweetzy/vouchers/model/manager/VoucherManager.java
@@ -52,7 +52,7 @@ public void remove(@NonNull String s) {
 	public boolean isVoucher(final ItemStack item) {
 		if (item == null || item.getType() == CompMaterial.AIR.parseMaterial() || item.getAmount() == 0) return false;
 
-		return NBT.get(item, nbt -> nbt.hasTag("Tweetzy:Vouchers"));
+		return NBT.get(item, nbt -> (boolean) nbt.hasTag("Tweetzy:Vouchers"));
 	}
 
 	@Override