diff --git a/src/main/java/mod/chiselsandbits/chiseledblock/data/VoxelBlob.java b/src/main/java/mod/chiselsandbits/chiseledblock/data/VoxelBlob.java
index 3a0899a9..b74f8532 100644
--- a/src/main/java/mod/chiselsandbits/chiseledblock/data/VoxelBlob.java
+++ b/src/main/java/mod/chiselsandbits/chiseledblock/data/VoxelBlob.java
@@ -126,7 +126,7 @@ private static void updateCacheClient()
 
 				final int id = blockId | meta << 12;
 				final IBlockState state = Block.getStateById( id );
-				if ( state == null )
+				if ( state == null || state.getBlock() != block )
 				{
 					// reverse mapping is broken, so just skip over this state.
 					continue;