diff --git a/ClassicalSharp/Events/WorldEvents.cs b/ClassicalSharp/Events/WorldEvents.cs
index 07989fb6c..5da8ed7f8 100644
--- a/ClassicalSharp/Events/WorldEvents.cs
+++ b/ClassicalSharp/Events/WorldEvents.cs
@@ -54,6 +54,6 @@ namespace ClassicalSharp.Events {
 		WeatherSpeed,
 		WeatherFade,
 		ExpFog,
-		SidesLevel,
+		SidesOffset,
 	}
 }
diff --git a/ClassicalSharp/Map/World.cs b/ClassicalSharp/Map/World.cs
index 166782db7..fc72a157d 100644
--- a/ClassicalSharp/Map/World.cs
+++ b/ClassicalSharp/Map/World.cs
@@ -60,7 +60,6 @@ namespace ClassicalSharp.Map {
 				throw new InvalidOperationException("Blocks array length does not match volume of map.");
 			
 			if (Env.EdgeHeight == -1) Env.EdgeHeight = height / 2;
-			if (Env.SidesHeight == -1) Env.SidesHeight = Env.EdgeHeight - 2;
 			if (Env.CloudHeight == -1) Env.CloudHeight = height + 2;
 		}
 		
diff --git a/ClassicalSharp/Map/WorldEnv.cs b/ClassicalSharp/Map/WorldEnv.cs
index 3b1c8615a..3937b8316 100644
--- a/ClassicalSharp/Map/WorldEnv.cs
+++ b/ClassicalSharp/Map/WorldEnv.cs
@@ -64,7 +64,10 @@ namespace ClassicalSharp.Map {
 		public BlockID SidesBlock = Block.Bedrock;
 		
 		/// <summary> Maximum height of the various parts of the map sides, in world space. </summary>
-		public int SidesHeight;
+		public int SidesHeight { get { return EdgeHeight + SidesOffset; } }
+		
+		/// <summary> Offset of height of map sides from height of map edge. </summary>
+		public int SidesOffset = -2;
 		
 		/// <summary> Whether exponential fog mode is used by default. </summary>
 		public bool ExpFog;
@@ -77,7 +80,7 @@ namespace ClassicalSharp.Map {
 
 		/// <summary> Resets all of the environment properties to their defaults. </summary>
 		public void Reset() {
-			EdgeHeight = -1; SidesHeight = -1; CloudHeight = -1;
+			EdgeHeight = -1; SidesOffset = -2; CloudHeight = -1;
 			EdgeBlock = Block.StillWater; SidesBlock = Block.Bedrock;
 			CloudsSpeed = 1; WeatherSpeed = 1; WeatherFade = 1;
 			
@@ -143,11 +146,11 @@ namespace ClassicalSharp.Map {
 		
 		/// <summary> Sets height of the map edges in world space, and raises
 		/// EnvVariableChanged event with variable 'EdgeLevel'. </summary>
-		public void SetEdgeLevel(int level) { SidesHeight = level - 2; Set(level, ref EdgeHeight, EnvVar.EdgeLevel); }
+		public void SetEdgeLevel(int level) { Set(level, ref EdgeHeight, EnvVar.EdgeLevel); }
 			
-		/// <summary> Sets height of the map sides in world space, and raises
+		/// <summary> Sets offset of the height of the map sides from map edges in world space, and raises
 		/// EnvVariableChanged event with variable 'SidesLevel'. </summary>
-		public void SetSidesLevel(int level) { Set(level, ref SidesHeight, EnvVar.SidesLevel); }
+		public void SetSidesOffset(int level) { Set(level, ref SidesOffset, EnvVar.SidesOffset); }
 		
 		/// <summary> Sets whether exponential fog is used, and raises
 		/// EnvVariableChanged event with variable 'ExpFog'. </summary>
diff --git a/ClassicalSharp/Network/Protocols/CPE.cs b/ClassicalSharp/Network/Protocols/CPE.cs
index 0cc8c31af..921004347 100644
--- a/ClassicalSharp/Network/Protocols/CPE.cs
+++ b/ClassicalSharp/Network/Protocols/CPE.cs
@@ -360,7 +360,7 @@ namespace ClassicalSharp.Network.Protocols {
 				case 8:
 					env.SetExpFog(value != 0); break;
 				case 9:
-					env.SetSidesLevel(value); break;
+					env.SetSidesOffset(value); break;
 			}
 		}
 		
diff --git a/ClassicalSharp/Rendering/ChunkUpdater.cs b/ClassicalSharp/Rendering/ChunkUpdater.cs
index c31bc64eb..9977f1d53 100644
--- a/ClassicalSharp/Rendering/ChunkUpdater.cs
+++ b/ClassicalSharp/Rendering/ChunkUpdater.cs
@@ -89,7 +89,7 @@ namespace ClassicalSharp.Renderers {
 		void EnvVariableChanged(object sender, EnvVarEventArgs e) {
 			if (e.Var == EnvVar.SunlightColour || e.Var == EnvVar.ShadowlightColour) {
 				Refresh();
-			} else if (e.Var == EnvVar.EdgeLevel || e.Var == EnvVar.SidesLevel) {
+			} else if (e.Var == EnvVar.EdgeLevel || e.Var == EnvVar.SidesOffset) {
 				int oldClip = builder.edgeLevel;
 				builder.sidesLevel = Math.Max(0, game.World.Env.SidesHeight);
 				builder.edgeLevel = Math.Max(0, game.World.Env.EdgeHeight);
diff --git a/ClassicalSharp/Rendering/Env/MapBordersRenderer.cs b/ClassicalSharp/Rendering/Env/MapBordersRenderer.cs
index 28df10409..cc0427ae2 100644
--- a/ClassicalSharp/Rendering/Env/MapBordersRenderer.cs
+++ b/ClassicalSharp/Rendering/Env/MapBordersRenderer.cs
@@ -114,7 +114,7 @@ namespace ClassicalSharp.Renderers {
 				MakeTexture(ref sideTexId, ref lastSideTexLoc, map.Env.SidesBlock);
 				if (game.BlockInfo.BlocksLight[map.Env.SidesBlock] != fullColSides)
 					ResetSidesAndEdges(null, null);
-			} else if (e.Var == EnvVar.EdgeLevel || e.Var == EnvVar.SidesLevel) {
+			} else if (e.Var == EnvVar.EdgeLevel || e.Var == EnvVar.SidesOffset) {
 				ResetSidesAndEdges(null, null);
 			} else if (e.Var == EnvVar.SunlightColour) {
 				ResetEdges();