diff --git a/game/src/main/org/apollo/game/model/entity/attr/AttributeDefinition.java b/game/src/main/org/apollo/game/model/entity/attr/AttributeDefinition.java
index 9f08acbb..6a47996f 100644
--- a/game/src/main/org/apollo/game/model/entity/attr/AttributeDefinition.java
+++ b/game/src/main/org/apollo/game/model/entity/attr/AttributeDefinition.java
@@ -42,6 +42,17 @@ public final class AttributeDefinition<T> {
 		return new AttributeDefinition<>(defaultValue, persistence, AttributeType.LONG);
 	}
 
+	/**
+	 * Creates an AttributeDefinition for a {@code long}.
+	 *
+	 * @param defaultValue The default value of the definition.
+	 * @param persistence The {@link AttributePersistence} of the definition.
+	 * @return The AttributeDefinition.
+	 */
+	public static AttributeDefinition<Long> forLong(long defaultValue, AttributePersistence persistence) {
+		return new AttributeDefinition<>(defaultValue, persistence, AttributeType.LONG);
+	}
+
 	/**
 	 * Creates an AttributeDefinition for a String.
 	 *
diff --git a/game/src/main/org/apollo/game/model/entity/attr/AttributeMap.java b/game/src/main/org/apollo/game/model/entity/attr/AttributeMap.java
index 5937274b..0ee12779 100644
--- a/game/src/main/org/apollo/game/model/entity/attr/AttributeMap.java
+++ b/game/src/main/org/apollo/game/model/entity/attr/AttributeMap.java
@@ -113,7 +113,7 @@ public final class AttributeMap {
 	private <T> Attribute<?> createAttribute(T value, AttributeType type) {
 		switch (type) {
 			case LONG:
-				return new NumericalAttribute((Long) value);
+				return new NumericalAttribute(((Number) value).longValue());
 			case DOUBLE:
 				return new NumericalAttribute((Double) value);
 			case STRING:
diff --git a/game/src/main/org/apollo/game/model/entity/attr/StringAttribute.java b/game/src/main/org/apollo/game/model/entity/attr/StringAttribute.java
index c2f0454c..2f6062bf 100644
--- a/game/src/main/org/apollo/game/model/entity/attr/StringAttribute.java
+++ b/game/src/main/org/apollo/game/model/entity/attr/StringAttribute.java
@@ -1,6 +1,6 @@
 package org.apollo.game.model.entity.attr;
 
-import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
 
 /**
@@ -31,11 +31,11 @@ public final class StringAttribute extends Attribute<String> {
 
 	@Override
 	public byte[] encode() {
-		byte[] bytes = value.getBytes(Charset.forName("UTF-8"));
+		byte[] bytes = value.getBytes(StandardCharsets.UTF_8);
 		int length = bytes.length;
 
 		bytes = Arrays.copyOf(bytes, length + 1);
-		bytes[length - 1] = 0;
+		bytes[length] = 0;
 		return bytes;
 	}
 
diff --git a/game/src/test/org/apollo/game/model/entity/attr/AttributeTests.java b/game/src/test/org/apollo/game/model/entity/attr/AttributeTests.java
new file mode 100644
index 00000000..bbd656f8
--- /dev/null
+++ b/game/src/test/org/apollo/game/model/entity/attr/AttributeTests.java
@@ -0,0 +1,78 @@
+package org.apollo.game.model.entity.attr;
+
+import java.nio.charset.StandardCharsets;
+
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+import com.google.common.primitives.Longs;
+
+/**
+ * Tests for different {@link Attribute}s.
+ */
+public final class AttributeTests {
+
+	/**
+	 * Defines Attributes with their default values before any tests are run.
+	 */
+	@Before
+	public void setup() {
+		AttributeMap.define("string_test", AttributeDefinition.forString("Hello world", AttributePersistence.TRANSIENT));
+		AttributeMap.define("boolean_test", AttributeDefinition.forBoolean(true, AttributePersistence.TRANSIENT));
+		AttributeMap.define("int_test", AttributeDefinition.forInt(Integer.MAX_VALUE, AttributePersistence.TRANSIENT));
+		AttributeMap.define("long_test", AttributeDefinition.forLong(Long.MAX_VALUE, AttributePersistence.TRANSIENT));
+		AttributeMap.define("double_test", AttributeDefinition.forDouble(Double.MAX_VALUE, AttributePersistence.TRANSIENT));
+	}
+
+	/**
+	 * Tests Attribute <code>String</code> encoding.
+	 */
+	@Test
+	public void stringEncode() {
+		AttributeMap map = new AttributeMap();
+		byte[] expected = "Hello world\0".getBytes(StandardCharsets.UTF_8);
+		Assert.assertArrayEquals(expected, map.get("string_test").encode());
+	}
+
+	/**
+	 * Tests Attribute <code>boolean</code> encoding.
+	 */
+	@Test
+	public void booleanEncode() {
+		AttributeMap map = new AttributeMap();
+		byte[] expected = { 1 };
+		Assert.assertArrayEquals(expected, map.get("boolean_test").encode());
+	}
+
+	/**
+	 * Tests Attribute <code>int</code> encoding.
+	 */
+	@Test
+	public void intEncode() {
+		AttributeMap map = new AttributeMap();
+		byte[] expected = Longs.toByteArray(Integer.MAX_VALUE);
+		Assert.assertArrayEquals(expected, map.get("int_test").encode());
+	}
+
+	/**
+	 * Tests Attribute <code>long</code> encoding.
+	 */
+	@Test
+	public void longEncode() {
+		AttributeMap map = new AttributeMap();
+		byte[] expected = Longs.toByteArray(Long.MAX_VALUE);
+		Assert.assertArrayEquals(expected, map.get("long_test").encode());
+	}
+
+	/**
+	 * Tests Attribute <code>double</code> encoding.
+	 */
+	@Test
+	public void doubleEncode() {
+		AttributeMap map = new AttributeMap();
+		byte[] expected = Longs.toByteArray(Double.doubleToLongBits(Double.MAX_VALUE));
+		Assert.assertArrayEquals(expected, map.get("double_test").encode());
+	}
+
+}