diff --git a/ethcore/src/snapshot/block.rs b/ethcore/src/snapshot/block.rs
index 00151a582..27c27c16f 100644
--- a/ethcore/src/snapshot/block.rs
+++ b/ethcore/src/snapshot/block.rs
@@ -16,6 +16,9 @@
 
 //! Block RLP compression.
 
+// TODO [rob] remove when BlockRebuilder done.
+#![allow(dead_code)]
+
 use block::Block;
 use header::Header;