diff --git a/resign.go b/resign.go
index e95a876..b3da777 100644
--- a/resign.go
+++ b/resign.go
@@ -1,6 +1,7 @@
 package spec
 
 import (
+	"bytes"
 	"fmt"
 
 	"github.com/attestantio/go-eth2-client/spec/phase0"
@@ -14,6 +15,9 @@ func ValidateResignMessage(
 	operator *Operator,
 	proof *SignedProof,
 ) error {
+	if !bytes.Equal(resign.Owner[:], proof.Proof.Owner[:]) {
+		return fmt.Errorf("invalid owner address")
+	}
 	if !ValidAmountSet(phase0.Gwei(resign.Amount)) {
 		return fmt.Errorf("amount should be in range between 32 ETH and 2048 ETH")
 	}
diff --git a/testing/resign_test.go b/testing/resign_test.go
index ae9d768..c8ab9e6 100644
--- a/testing/resign_test.go
+++ b/testing/resign_test.go
@@ -225,8 +225,8 @@ func TestValidateResign(t *testing.T) {
 		))
 	})
 
-	t.Run("add owner address", func(t *testing.T) {
-		require.NoError(t, spec.ValidateResignMessage(&spec.Resign{
+	t.Run("invalid owner address", func(t *testing.T) {
+		require.EqualError(t, spec.ValidateResignMessage(&spec.Resign{
 			ValidatorPubKey:       fixtures.ShareSK(fixtures.TestValidator4Operators).GetPublicKey().Serialize(),
 			WithdrawalCredentials: fixtures.TestWithdrawalCred,
 			Fork:                  fixtures.TestFork,
@@ -235,7 +235,7 @@ func TestValidateResign(t *testing.T) {
 			Amount:                uint64(crypto.MAX_EFFECTIVE_BALANCE),
 		},
 			fixtures.GenerateOperators(4)[0],
-			&fixtures.TestOperator1Proof4Operators))
+			&fixtures.TestOperator1Proof4Operators), "invalid owner address")
 	})
 
 	t.Run("invalid proof", func(t *testing.T) {