diff --git a/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/mca/extensions/DoorExtension.java b/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/mca/extensions/DoorExtension.java
index 77322e9b..de25dc7f 100644
--- a/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/mca/extensions/DoorExtension.java
+++ b/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/mca/extensions/DoorExtension.java
@@ -26,6 +26,7 @@ package de.bluecolored.bluemap.core.mca.extensions;
 
 import java.util.Collection;
 import java.util.Map.Entry;
+import java.util.Objects;
 
 import com.flowpowered.math.vector.Vector3i;
 import com.google.common.collect.Lists;
@@ -50,7 +51,7 @@ public class DoorExtension implements BlockStateExtension {
 	public BlockState extend(MCAWorld world, Vector3i pos, BlockState state) {
 		BlockState otherDoor;
 		
-		boolean isLower = state.getProperties().get("half").equals("lower"); 
+		boolean isLower = Objects.equals(state.getProperties().get("half"), "lower"); 
 		
 		if (isLower) {
 			otherDoor = world.getBlockState(pos.add(Direction.UP.toVector()));
diff --git a/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/mca/extensions/DoublePlantExtension.java b/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/mca/extensions/DoublePlantExtension.java
index 79f9ea5b..32852924 100644
--- a/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/mca/extensions/DoublePlantExtension.java
+++ b/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/mca/extensions/DoublePlantExtension.java
@@ -25,6 +25,7 @@
 package de.bluecolored.bluemap.core.mca.extensions;
 
 import java.util.Collection;
+import java.util.Objects;
 
 import com.flowpowered.math.vector.Vector3i;
 import com.google.common.collect.Lists;
@@ -46,7 +47,7 @@ public class DoublePlantExtension implements BlockStateExtension {
 	
 	@Override
 	public BlockState extend(MCAWorld world, Vector3i pos, BlockState state) {
-		if (state.getProperties().get("half").equals("upper")) {
+		if (Objects.equals(state.getProperties().get("half"), "upper")) {
 			BlockState otherPlant = world.getBlockState(pos.add(Direction.DOWN.toVector()));
 			
 			return otherPlant.with("half", "upper");
diff --git a/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/mca/extensions/RedstoneExtension.java b/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/mca/extensions/RedstoneExtension.java
index 41090c13..d1175d72 100644
--- a/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/mca/extensions/RedstoneExtension.java
+++ b/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/mca/extensions/RedstoneExtension.java
@@ -58,20 +58,28 @@ public class RedstoneExtension implements BlockStateExtension {
 	
 	@Override
 	public BlockState extend(MCAWorld world, Vector3i pos, BlockState state) {
+		BlockState up = world.getBlockState(pos.add(0, 1, 0));
+		boolean upBlocking = !up.equals(BlockState.AIR);
+		
 		state = state
-				.with("north", connection(world, pos, state, Direction.NORTH))
-				.with("east", connection(world, pos, state, Direction.EAST))
-				.with("south", connection(world, pos, state, Direction.SOUTH))
-				.with("west", connection(world, pos, state, Direction.WEST));
+				.with("north", connection(world, pos, upBlocking, Direction.NORTH))
+				.with("east", connection(world, pos, upBlocking, Direction.EAST))
+				.with("south", connection(world, pos, upBlocking, Direction.SOUTH))
+				.with("west", connection(world, pos, upBlocking, Direction.WEST));
 		
 		return state;
 	}
 
-	private String connection(MCAWorld world, Vector3i pos, BlockState state, Direction direction) {
-		BlockState next = world.getBlockState(pos.add(direction.toVector()));
+	private String connection(MCAWorld world, Vector3i pos, boolean upBlocking, Direction direction) {
+		Vector3i directionVector = direction.toVector();
+		
+		BlockState next = world.getBlockState(pos.add(directionVector));
 		if (CONNECTIBLE.contains(next.getFullId())) return "side";
 		
-		//TODO: up
+		if (!upBlocking) {
+			BlockState nextup = world.getBlockState(pos.add(directionVector.getX(), directionVector.getY() + 1, directionVector.getZ()));
+			if (nextup.getFullId().equals("minecraft:redstone_wire")) return "up";
+		}
 		
 		return "none";
 	}
diff --git a/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/mca/extensions/WallConnectExtension.java b/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/mca/extensions/WallConnectExtension.java
index dc2592a8..44526c9a 100644
--- a/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/mca/extensions/WallConnectExtension.java
+++ b/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/mca/extensions/WallConnectExtension.java
@@ -25,6 +25,7 @@
 package de.bluecolored.bluemap.core.mca.extensions;
 
 import java.util.HashSet;
+import java.util.Objects;
 import java.util.Set;
 
 import com.flowpowered.math.vector.Vector3i;
@@ -37,7 +38,8 @@ import de.bluecolored.bluemap.core.world.BlockState;
 public class WallConnectExtension extends ConnectSameOrFullBlockExtension {
 
 	private static final HashSet<String> AFFECTED_BLOCK_IDS = Sets.newHashSet(
-			"minecraft:cobblestone_wall"
+			"minecraft:cobblestone_wall",
+			"minecraft:mossy_cobblestone_wall"
 		);
 	
 	@Override
@@ -45,9 +47,9 @@ public class WallConnectExtension extends ConnectSameOrFullBlockExtension {
 		state = super.extend(world, pos, state);
 		
 		if (
-				state.getProperties().get("north").equals(state.getProperties().get("south")) &&
-				state.getProperties().get("east").equals(state.getProperties().get("west")) &&
-				!state.getProperties().get("north").equals(state.getProperties().get("east")) &&
+				Objects.equals(state.getProperties().get("north"), state.getProperties().get("south")) &&
+				Objects.equals(state.getProperties().get("east"), state.getProperties().get("west")) &&
+				!Objects.equals(state.getProperties().get("north"), state.getProperties().get("east")) &&
 				!connectsTo(world, pos.add(Direction.UP.toVector()))
 		) {
 			return state.with("up", "false");
diff --git a/README.md b/README.md
index d43e7738..5bc9a4d8 100644
--- a/README.md
+++ b/README.md
@@ -75,7 +75,7 @@ command | permission | description
 *\[clickable command in /bluemap\]* | bluemap.rendertask.remove | removes the clicked render-task
 
 ## Todo / planned features
-Here is an *(surely incomplete)* list of things that i want to include in future versions. *(They are not in any specific order. There is no guarantee that any of those things will ever be included.)*
+Here is a *(surely incomplete)* list of things that i want to include in future versions. *(They are not in any specific order. There is no guarantee that any of those things will ever be included.)*
 
 - render tile-entities (chests, etc..)
 - render entities