diff --git a/common/types.go b/common/types.go
index 7646b2c34..6a9abdf18 100644
--- a/common/types.go
+++ b/common/types.go
@@ -1,6 +1,6 @@
 package common
 
 type (
-	Hash    [32]byte
-	Address [20]byte
+	uHash    [32]byte
+	uAddress [20]byte
 )