diff --git a/builder/output_builder_account.go b/builder/output_builder_account.go
index 77e3d754a..77130abdf 100644
--- a/builder/output_builder_account.go
+++ b/builder/output_builder_account.go
@@ -105,14 +105,6 @@ func (builder *AccountOutputBuilder) Sender(senderAddr iotago.Address) *AccountO
 	return builder
 }
 
-// ImmutableSender sets/modifies an iotago.SenderFeature as an immutable feature on the output.
-// Only call this function on a new iotago.AccountOutput.
-func (builder *AccountOutputBuilder) ImmutableSender(senderAddr iotago.Address) *AccountOutputBuilder {
-	builder.output.ImmutableFeatures.Upsert(&iotago.SenderFeature{Address: senderAddr})
-
-	return builder
-}
-
 // Metadata sets/modifies an iotago.MetadataFeature on the output.
 func (builder *AccountOutputBuilder) Metadata(entries iotago.MetadataFeatureEntries) *AccountOutputBuilder {
 	builder.output.Features.Upsert(&iotago.MetadataFeature{Entries: entries})
diff --git a/builder/output_builder_test.go b/builder/output_builder_test.go
index 5f3557a7b..78298fcd1 100644
--- a/builder/output_builder_test.go
+++ b/builder/output_builder_test.go
@@ -52,7 +52,6 @@ func TestAccountOutputBuilder(t *testing.T) {
 		amount             iotago.BaseToken = 1337
 		metadataEntries                     = iotago.MetadataFeatureEntries{"data": []byte("123456")}
 		immMetadataEntries                  = iotago.MetadataFeatureEntries{"data": []byte("654321")}
-		immSender                           = tpkg.RandEd25519Address()
 
 		blockIssuerKey1    = iotago.Ed25519PublicKeyBlockIssuerKeyFromPublicKey(tpkg.Rand32ByteArray())
 		blockIssuerKey2    = iotago.Ed25519PublicKeyBlockIssuerKeyFromPublicKey(tpkg.Rand32ByteArray())
@@ -66,7 +65,6 @@ func TestAccountOutputBuilder(t *testing.T) {
 		Staking(amount, 1, 1000).
 		BlockIssuer(iotago.NewBlockIssuerKeys(blockIssuerKey1, blockIssuerKey2, blockIssuerKey3), 100000).
 		ImmutableMetadata(immMetadataEntries).
-		ImmutableSender(immSender).
 		FoundriesToGenerate(5).
 		Build()
 	require.NoError(t, err)
@@ -93,7 +91,6 @@ func TestAccountOutputBuilder(t *testing.T) {
 			},
 		},
 		ImmutableFeatures: iotago.AccountOutputImmFeatures{
-			&iotago.SenderFeature{Address: immSender},
 			&iotago.MetadataFeature{Entries: immMetadataEntries},
 		},
 	}
@@ -143,7 +140,6 @@ func TestAccountOutputBuilder(t *testing.T) {
 			},
 		},
 		ImmutableFeatures: iotago.AccountOutputImmFeatures{
-			&iotago.SenderFeature{Address: immSender},
 			&iotago.MetadataFeature{Entries: immMetadataEntries},
 		},
 	}