diff --git a/ethcore/light/src/client/header_chain.rs b/ethcore/light/src/client/header_chain.rs
index a6e5165d7..615ffd89b 100644
--- a/ethcore/light/src/client/header_chain.rs
+++ b/ethcore/light/src/client/header_chain.rs
@@ -427,7 +427,7 @@ impl HeaderChain {
 		}
 	}
 
-	/// Get the nth CHT root, if it has been computed.
+	/// Get the nth CHT root, if it's been computed.
 	///
 	/// CHT root 0 is from block `1..2048`.
 	/// CHT root 1 is from block `2049..4096`