diff --git a/cache/src/main/java/net/runelite/cache/io/OutputStream.java b/cache/src/main/java/net/runelite/cache/io/OutputStream.java
index 640434dd1a..2dc229651c 100644
--- a/cache/src/main/java/net/runelite/cache/io/OutputStream.java
+++ b/cache/src/main/java/net/runelite/cache/io/OutputStream.java
@@ -100,7 +100,7 @@ public final class OutputStream extends java.io.OutputStream
 	public void writeBigSmart(int value)
 	{
 		Preconditions.checkArgument(value >= 0);
-		if (value >= 65536)
+		if (value >= 32768)
 		{
 			ensureRemaining(4);
 			this.writeInt((1 << 31) | value);
diff --git a/cache/src/test/java/net/runelite/cache/io/OutputStreamTest.java b/cache/src/test/java/net/runelite/cache/io/OutputStreamTest.java
index fb3037f04b..29dd902168 100644
--- a/cache/src/test/java/net/runelite/cache/io/OutputStreamTest.java
+++ b/cache/src/test/java/net/runelite/cache/io/OutputStreamTest.java
@@ -35,10 +35,12 @@ public class OutputStreamTest
 		OutputStream os = new OutputStream();
 		os.writeBigSmart(42);
 		os.writeBigSmart(70000);
+		os.writeBigSmart(65535);
 
 		InputStream is = new InputStream(os.getArray());
 		Assert.assertEquals(42, is.readBigSmart());
 		Assert.assertEquals(70000, is.readBigSmart());
+		Assert.assertEquals(65535, is.readBigSmart());
 	}
 
 }