diff --git a/common/types.go b/common/types.go
index bf74e4371..7184b2b11 100644
--- a/common/types.go
+++ b/common/types.go
@@ -239,9 +239,6 @@ func (a Address) Cmp(other Address) int {
 // Bytes gets the string representation of the underlying address.
 func (a Address) Bytes() []byte { return a[:] }
 
-// Hash converts an address to a hash by left-padding it with zeros.
-func (a Address) Hash() Hash { return BytesToHash(a[:]) }
-
 // Big converts an address to a big integer.
 func (a Address) Big() *big.Int { return new(big.Int).SetBytes(a[:]) }