diff --git a/src/main/java/vazkii/botania/common/block/mana/BlockPrism.java b/src/main/java/vazkii/botania/common/block/mana/BlockPrism.java
index d591494c8..4b45341af 100644
--- a/src/main/java/vazkii/botania/common/block/mana/BlockPrism.java
+++ b/src/main/java/vazkii/botania/common/block/mana/BlockPrism.java
@@ -97,7 +97,9 @@ public class BlockPrism extends BlockModContainer implements IManaTrigger, ILexi
 		int meta = par1World.getBlockMetadata(par2, par3, par4);
 
 		if(lens == null && isHeldItemLens) {
-			par5EntityPlayer.inventory.setInventorySlotContents(par5EntityPlayer.inventory.currentItem, null);
+			if(!par5EntityPlayer.capabilities.isCreativeMode) 
+				par5EntityPlayer.inventory.setInventorySlotContents(par5EntityPlayer.inventory.currentItem, null);
+			
 			prism.setInventorySlotContents(0, heldItem.copy());
 			prism.markDirty();
 			par1World.setBlockMetadataWithNotify(par2, par3, par4, meta | 1, 1 | 2);