diff --git a/src/FirebirdSql.Data.FirebirdClient/Services/FbBackup.cs b/src/FirebirdSql.Data.FirebirdClient/Services/FbBackup.cs
index 35c83387..a7ea0e9d 100644
--- a/src/FirebirdSql.Data.FirebirdClient/Services/FbBackup.cs
+++ b/src/FirebirdSql.Data.FirebirdClient/Services/FbBackup.cs
@@ -32,7 +32,7 @@ public sealed class FbBackup : FbService
 	public int Factor { get; set; }
 	public string SkipData { get; set; }
 	public FbBackupFlags Options { get; set; }
-	public FbBackupRestoreStatistics Statistics { get; set; }
+	public FbBackupRestoreStatistics? Statistics { get; set; }
 
 	public FbBackup(string connectionString = null)
 		: base(connectionString)
@@ -67,7 +67,8 @@ public void Execute()
 				if (!string.IsNullOrEmpty(SkipData))
 					startSpb.Append2(IscCodes.isc_spb_bkp_skip_data, SkipData);
 				startSpb.Append(IscCodes.isc_spb_options, (int)Options);
-				startSpb.Append2(IscCodes.isc_spb_bkp_stat, Statistics.BuildConfiguration());
+				if (Statistics.HasValue)
+					startSpb.Append2(IscCodes.isc_spb_bkp_stat, Statistics.Value.BuildConfiguration());
 				if (ConnectionStringOptions.ParallelWorkers > 0)
 					startSpb.Append(IscCodes.isc_spb_bkp_parallel_workers, ConnectionStringOptions.ParallelWorkers);
 				StartTask(startSpb);
@@ -113,7 +114,8 @@ public async Task ExecuteAsync(CancellationToken cancellationToken = default)
 				if (!string.IsNullOrEmpty(SkipData))
 					startSpb.Append2(IscCodes.isc_spb_bkp_skip_data, SkipData);
 				startSpb.Append(IscCodes.isc_spb_options, (int)Options);
-				startSpb.Append2(IscCodes.isc_spb_bkp_stat, Statistics.BuildConfiguration());
+				if (Statistics.HasValue)
+					startSpb.Append2(IscCodes.isc_spb_bkp_stat, Statistics.Value.BuildConfiguration());
 				if (ConnectionStringOptions.ParallelWorkers > 0)
 					startSpb.Append(IscCodes.isc_spb_bkp_parallel_workers, ConnectionStringOptions.ParallelWorkers);
 				await StartTaskAsync(startSpb, cancellationToken).ConfigureAwait(false);
diff --git a/src/FirebirdSql.Data.FirebirdClient/Services/FbRestore.cs b/src/FirebirdSql.Data.FirebirdClient/Services/FbRestore.cs
index b52c01c6..86062c70 100644
--- a/src/FirebirdSql.Data.FirebirdClient/Services/FbRestore.cs
+++ b/src/FirebirdSql.Data.FirebirdClient/Services/FbRestore.cs
@@ -46,7 +46,7 @@ public int? PageSize
 	public bool ReadOnly { get; set; }
 	public string SkipData { get; set; }
 	public FbRestoreFlags Options { get; set; }
-	public FbBackupRestoreStatistics Statistics { get; set; }
+	public FbBackupRestoreStatistics? Statistics { get; set; }
 
 	public FbRestore(string connectionString = null)
 		: base(connectionString)
@@ -82,7 +82,8 @@ public void Execute()
 				if (!string.IsNullOrEmpty(SkipData))
 					startSpb.Append2(IscCodes.isc_spb_res_skip_data, SkipData);
 				startSpb.Append(IscCodes.isc_spb_options, (int)Options);
-				startSpb.Append2(IscCodes.isc_spb_res_stat, Statistics.BuildConfiguration());
+				if (Statistics.HasValue)
+					startSpb.Append2(IscCodes.isc_spb_res_stat, Statistics.Value.BuildConfiguration());
 				if (ConnectionStringOptions.ParallelWorkers > 0)
 					startSpb.Append(IscCodes.isc_spb_res_parallel_workers, ConnectionStringOptions.ParallelWorkers);
 				StartTask(startSpb);
@@ -129,7 +130,8 @@ public async Task ExecuteAsync(CancellationToken cancellationToken = default)
 				if (!string.IsNullOrEmpty(SkipData))
 					startSpb.Append2(IscCodes.isc_spb_res_skip_data, SkipData);
 				startSpb.Append(IscCodes.isc_spb_options, (int)Options);
-				startSpb.Append2(IscCodes.isc_spb_res_stat, Statistics.BuildConfiguration());
+				if (Statistics.HasValue)
+					startSpb.Append2(IscCodes.isc_spb_res_stat, Statistics.Value.BuildConfiguration());
 				if (ConnectionStringOptions.ParallelWorkers > 0)
 					startSpb.Append(IscCodes.isc_spb_res_parallel_workers, ConnectionStringOptions.ParallelWorkers);
 				await StartTaskAsync(startSpb, cancellationToken).ConfigureAwait(false);