diff --git a/Minecraft.World/Level.h b/Minecraft.World/Level.h
index bd33c0c736..0b2c5daae3 100644
--- a/Minecraft.World/Level.h
+++ b/Minecraft.World/Level.h
@@ -69,7 +69,7 @@ class Level : public LevelSource
 	static const int MAX_DISPENSABLE_PROJECTILES = 3000;
 
 	static const int MAX_LEVEL_SIZE = 30000000;
-	static const int maxMovementHeight = 512;	// 4J added
+	static const int maxMovementHeight = 256;	// 4J added
 
 	static const int minBuildHeight = 0;		// 4J - brought forward from 1.2.3
 	static const int maxBuildHeight = 512;		// 4J - brought forward from 1.2.3