diff --git a/CHANGELOG.md b/CHANGELOG.md
index c32b2d3062..85e4cb70eb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,10 @@
 * [ct_hammer] support HTTPS and Bearer token for Authentication.
 * [preloader] support Bearer token Authentication for non temporal logs.
 
+### CTFE Storage Saving: Extra Data Issuance Chain Deduplication
+
+* Suppress unnecessary duplicate key errors in the IssuanceChainStorage PostgreSQL implementation by @robstradling in https://github.com/google/certificate-transparency-go/pull/1678
+
 ## v1.3.1
 
 * Add AllLogListSignatureURL by @AlexLaroche in https://github.com/google/certificate-transparency-go/pull/1634
diff --git a/trillian/ctfe/storage/postgresql/postgresql.go b/trillian/ctfe/storage/postgresql/postgresql.go
index 241282b8fd..110c286f08 100644
--- a/trillian/ctfe/storage/postgresql/postgresql.go
+++ b/trillian/ctfe/storage/postgresql/postgresql.go
@@ -21,8 +21,6 @@ import (
 	"errors"
 	"strings"
 
-	"github.com/jackc/pgerrcode"
-	"github.com/jackc/pgx/v5/pgconn"
 	_ "github.com/jackc/pgx/v5/stdlib"
 
 	"k8s.io/klog/v2"
@@ -30,7 +28,7 @@ import (
 
 const (
 	selectIssuanceChainByKeySQL = "SELECT c.ChainValue FROM IssuanceChain AS c WHERE c.IdentityHash = $1"
-	insertIssuanceChainSQL      = "INSERT INTO IssuanceChain(IdentityHash, ChainValue) VALUES ($1, $2)"
+	insertIssuanceChainSQL      = "INSERT INTO IssuanceChain(IdentityHash, ChainValue) VALUES ($1, $2) ON CONFLICT DO NOTHING"
 )
 
 // IssuanceChainStorage is a PostgreSQL implementation of the IssuanceChainStorage interface.
@@ -68,16 +66,7 @@ func (s *IssuanceChainStorage) FindByKey(ctx context.Context, key []byte) ([]byt
 // Add inserts the key-value pair of issuance chain.
 func (s *IssuanceChainStorage) Add(ctx context.Context, key []byte, chain []byte) error {
 	_, err := s.db.ExecContext(ctx, insertIssuanceChainSQL, key, chain)
-	if err != nil {
-		// Ignore duplicated key error.
-		var postgresqlErr *pgconn.PgError
-		if errors.As(err, &postgresqlErr) && postgresqlErr.Code == pgerrcode.UniqueViolation {
-			return nil
-		}
-		return err
-	}
-
-	return nil
+	return err
 }
 
 // open takes the data source name and returns the sql.DB object.