diff --git a/ethcore/src/blockchain/blockchain.rs b/ethcore/src/blockchain/blockchain.rs
index 2258db22e..27cc74e9b 100644
--- a/ethcore/src/blockchain/blockchain.rs
+++ b/ethcore/src/blockchain/blockchain.rs
@@ -186,7 +186,7 @@ impl BlockProvider for BlockChain {
 		self.extras_db.exists_with_cache(&self.block_details, hash)
 	}
 
-	// We do not store tracing information.
+	/// We do not store tracing information.
 	fn have_tracing(&self) -> bool { false }
 
 	/// Get raw block data
@@ -541,7 +541,7 @@ impl BlockChain {
 		Some(ret)
 	}
 
-	/// Get inserted block info which is critical to preapre extras updates.
+	/// Get inserted block info which is critical to prepare extras updates.
 	fn block_info(&self, block_bytes: &[u8]) -> BlockInfo {
 		let block = BlockView::new(block_bytes);
 		let header = block.header_view();
@@ -950,21 +950,25 @@ mod tests {
 		assert_eq!(ir1, ImportRoute {
 			enacted: vec![b1_hash],
 			retracted: vec![],
+			ommited: vec![],
 		});
 
 		assert_eq!(ir2, ImportRoute {
 			enacted: vec![b2_hash],
 			retracted: vec![],
+			ommited: vec![],
 		});
 
 		assert_eq!(ir3b, ImportRoute {
 			enacted: vec![b3b_hash],
 			retracted: vec![],
+			ommited: vec![],
 		});
 
 		assert_eq!(ir3a, ImportRoute {
 			enacted: vec![b3a_hash],
 			retracted: vec![b3b_hash],
+			ommited: vec![],
 		});
 
 		assert_eq!(bc.best_block_hash(), best_block_hash);
diff --git a/ethcore/src/blockchain/import_route.rs b/ethcore/src/blockchain/import_route.rs
index 253c4024a..eecf4f76d 100644
--- a/ethcore/src/blockchain/import_route.rs
+++ b/ethcore/src/blockchain/import_route.rs
@@ -26,6 +26,8 @@ pub struct ImportRoute {
 	pub retracted: Vec<H256>,
 	/// Blocks that were validated by new block.
 	pub enacted: Vec<H256>,
+	/// Blocks which are neither retracted nor enacted.
+	pub ommited: Vec<H256>,
 }
 
 impl ImportRoute {
@@ -33,6 +35,7 @@ impl ImportRoute {
 		ImportRoute {
 			retracted: vec![],
 			enacted: vec![],
+			ommited: vec![],
 		}
 	}
 }
@@ -43,13 +46,19 @@ impl From<BlockInfo> for ImportRoute {
 			BlockLocation::CanonChain => ImportRoute {
 				retracted: vec![],
 				enacted: vec![info.hash],
+				ommited: vec![],
+			},
+			BlockLocation::Branch => ImportRoute {
+				retracted: vec![],
+				enacted: vec![],
+				ommited: vec![info.hash],
 			},
-			BlockLocation::Branch => ImportRoute::none(),
 			BlockLocation::BranchBecomingCanonChain(mut data) => {
 				data.enacted.push(info.hash);
 				ImportRoute {
 					retracted: data.retracted,
 					enacted: data.enacted,
+					ommited: vec![],
 				}
 			}
 		}
@@ -68,6 +77,7 @@ mod tests {
 		assert_eq!(ImportRoute::none(), ImportRoute {
 			enacted: vec![],
 			retracted: vec![],
+			ommited: vec![],
 		});
 	}
 
@@ -80,7 +90,11 @@ mod tests {
 			location: BlockLocation::Branch,
 		};
 
-		assert_eq!(ImportRoute::from(info), ImportRoute::none());
+		assert_eq!(ImportRoute::from(info), ImportRoute {
+			retracted: vec![],
+			enacted: vec![],
+			ommited: vec![H256::from(U256::from(1))],
+		});
 	}
 
 	#[test]
@@ -95,6 +109,7 @@ mod tests {
 		assert_eq!(ImportRoute::from(info), ImportRoute {
 			retracted: vec![],
 			enacted: vec![H256::from(U256::from(1))],
+			ommited: vec![],
 		});
 	}
 
@@ -114,6 +129,7 @@ mod tests {
 		assert_eq!(ImportRoute::from(info), ImportRoute {
 			retracted: vec![H256::from(U256::from(3)), H256::from(U256::from(4))],
 			enacted: vec![H256::from(U256::from(1)), H256::from(U256::from(2))],
+			ommited: vec![],
 		});
 	}
 }