diff --git a/entity/EntityGrowingCrystal.java b/entity/EntityGrowingCrystal.java
index 5272f7cba..e80c65a61 100644
--- a/entity/EntityGrowingCrystal.java
+++ b/entity/EntityGrowingCrystal.java
@@ -9,11 +9,11 @@ import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.MathHelper;
 import net.minecraft.world.World;
 import appeng.api.implementations.items.IGrowableCrystal;
+import appeng.api.implementations.tiles.ICrystalGrowthAccelerator;
 import appeng.client.EffectType;
 import appeng.core.AEConfig;
 import appeng.core.CommonHelper;
 import appeng.core.features.AEFeature;
-import appeng.tile.misc.TileQuartzGrowthAccelerator;
 import appeng.util.Platform;
 
 final public class EntityGrowingCrystal extends EntityItem
@@ -145,8 +145,8 @@ final public class EntityGrowingCrystal extends EntityItem
 	private boolean isAccel(int x, int y, int z)
 	{
 		TileEntity te = worldObj.getTileEntity( x, y, z );
-		if ( te instanceof TileQuartzGrowthAccelerator )
-			return ((TileQuartzGrowthAccelerator) te).isPowered();
+		if ( te instanceof ICrystalGrowthAccelerator )
+			return ((ICrystalGrowthAccelerator) te).isPowered();
 		return false;
 	}
 
diff --git a/tile/misc/TileQuartzGrowthAccelerator.java b/tile/misc/TileQuartzGrowthAccelerator.java
index c20aa1d5b..9b2c4ffc5 100644
--- a/tile/misc/TileQuartzGrowthAccelerator.java
+++ b/tile/misc/TileQuartzGrowthAccelerator.java
@@ -7,6 +7,7 @@ import java.util.EnumSet;
 
 import net.minecraftforge.common.util.ForgeDirection;
 import appeng.api.implementations.IPowerChannelState;
+import appeng.api.implementations.tiles.ICrystalGrowthAccelerator;
 import appeng.api.networking.events.MENetworkEventSubscribe;
 import appeng.api.networking.events.MENetworkPowerStatusChange;
 import appeng.api.util.AECableType;
@@ -16,7 +17,7 @@ import appeng.tile.events.TileEventType;
 import appeng.tile.grid.AENetworkTile;
 import appeng.util.Platform;
 
-public class TileQuartzGrowthAccelerator extends AENetworkTile implements IPowerChannelState
+public class TileQuartzGrowthAccelerator extends AENetworkTile implements IPowerChannelState, ICrystalGrowthAccelerator
 {
 
 	public boolean hasPower = false;