diff --git a/src/main/java/com/hbm/tileentity/machine/rbmk/TileEntityRBMKControlManual.java b/src/main/java/com/hbm/tileentity/machine/rbmk/TileEntityRBMKControlManual.java
index 5c0c71677..92ec4377e 100644
--- a/src/main/java/com/hbm/tileentity/machine/rbmk/TileEntityRBMKControlManual.java
+++ b/src/main/java/com/hbm/tileentity/machine/rbmk/TileEntityRBMKControlManual.java
@@ -16,6 +16,7 @@ import net.minecraft.client.gui.GuiScreen;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.inventory.Container;
 import net.minecraft.nbt.NBTTagCompound;
+import net.minecraft.util.MathHelper;
 import net.minecraft.util.Vec3;
 import net.minecraft.world.World;
 
@@ -139,6 +140,16 @@ public class TileEntityRBMKControlManual extends TileEntityRBMKControl implement
 		return new Object[] {this.color.ordinal()};
 	}
 
+	@Callback(direct = true)
+	@Optional.Method(modid = "OpenComputers")
+	public Object[] setColor(Context context, Arguments args) {
+		int colorI = args.checkInteger(0);
+		colorI = MathHelper.clamp_int(colorI, 0, 4);
+		this.color = RBMKColor.values()[colorI];
+		return new Object[] {true};
+	}
+
+
 	@Override
 	public Container provideContainer(int ID, EntityPlayer player, World world, int x, int y, int z) {
 		return new ContainerRBMKControl(player.inventory, this);