diff --git a/src/main/java/appeng/block/networking/CableBusBlock.java b/src/main/java/appeng/block/networking/CableBusBlock.java
index 11f105fdc..5621d605d 100644
--- a/src/main/java/appeng/block/networking/CableBusBlock.java
+++ b/src/main/java/appeng/block/networking/CableBusBlock.java
@@ -158,11 +158,12 @@ public class CableBusBlock extends AEBaseTileBlock<CableBusTileEntity> implement
     @Override
     public boolean canConnectRedstone(final BlockState state, final IBlockReader w, final BlockPos pos,
             Direction side) {
+        // TODO: Verify this.
         if (side == null) {
-            side = Direction.UP;
+            return false;
         }
 
-        return this.cb(w, pos).canConnectRedstone(EnumSet.of(side));
+        return this.cb(w, pos).canConnectRedstone(side.getOpposite());
     }
 
     @Override
diff --git a/src/main/java/appeng/parts/CableBusContainer.java b/src/main/java/appeng/parts/CableBusContainer.java
index 2f4741ffa..31c231699 100644
--- a/src/main/java/appeng/parts/CableBusContainer.java
+++ b/src/main/java/appeng/parts/CableBusContainer.java
@@ -623,14 +623,9 @@ public class CableBusContainer extends CableBusStorage implements AEMultiTile, I
     }
 
     @Override
-    public boolean canConnectRedstone(final EnumSet<Direction> enumSet) {
-        for (final Direction dir : enumSet) {
-            final IPart part = this.getPart(dir);
-            if (part != null && part.canConnectRedstone()) {
-                return true;
-            }
-        }
-        return false;
+    public boolean canConnectRedstone(final Direction opposite) {
+        final IPart part = this.getPart(opposite);
+        return part != null && part.canConnectRedstone();
     }
 
     @Override
diff --git a/src/main/java/appeng/parts/ICableBusContainer.java b/src/main/java/appeng/parts/ICableBusContainer.java
index 06f7207d6..ebd5d0bca 100644
--- a/src/main/java/appeng/parts/ICableBusContainer.java
+++ b/src/main/java/appeng/parts/ICableBusContainer.java
@@ -18,7 +18,6 @@
 
 package appeng.parts;
 
-import java.util.EnumSet;
 import java.util.Random;
 
 import net.minecraft.entity.Entity;
@@ -43,7 +42,7 @@ public interface ICableBusContainer {
 
     int isProvidingWeakPower(Direction opposite);
 
-    boolean canConnectRedstone(EnumSet<Direction> of);
+    boolean canConnectRedstone(Direction opposite);
 
     void onEntityCollision(Entity e);
 
diff --git a/src/main/java/appeng/parts/NullCableBusContainer.java b/src/main/java/appeng/parts/NullCableBusContainer.java
index 0b853e001..7ce6a5470 100644
--- a/src/main/java/appeng/parts/NullCableBusContainer.java
+++ b/src/main/java/appeng/parts/NullCableBusContainer.java
@@ -18,7 +18,6 @@
 
 package appeng.parts;
 
-import java.util.EnumSet;
 import java.util.Random;
 
 import net.minecraft.entity.Entity;
@@ -48,7 +47,7 @@ public class NullCableBusContainer implements ICableBusContainer {
     }
 
     @Override
-    public boolean canConnectRedstone(final EnumSet<Direction> of) {
+    public boolean canConnectRedstone(final Direction opposite) {
         return false;
     }