diff --git a/Modules.Database/Firebird.vb b/Modules.Database/Firebird.vb
index 6b1d1bec..df64e43d 100644
--- a/Modules.Database/Firebird.vb
+++ b/Modules.Database/Firebird.vb
@@ -225,11 +225,20 @@ Public Class Firebird
     ''' <param name="SqlCommand">The command to execute</param>
     ''' <returns>True, if command was executed sucessfully. Otherwise false.</returns>
     Public Function ExecuteNonQuery(SqlCommand As String) As Boolean
-        Dim oConnection As FbConnection = GetConnection()
-        Dim oScalarValue As Object = ExecuteNonQueryWithConnection(SqlCommand, oConnection)
-        oConnection.Close()
+        Using oConnection As FbConnection = GetConnection()
+            Return ExecuteNonQueryWithConnection(SqlCommand, oConnection)
+        End Using
+    End Function
 
-        Return oScalarValue
+    ''' <summary>
+    ''' Executes a non-query command inside the specified transaction.
+    ''' </summary>
+    ''' <param name="SqlCommand">The command to execute</param>
+    ''' <returns>True, if command was executed sucessfully. Otherwise false.</returns>
+    Public Function ExecuteNonQuery(SqlCommand As String, Transaction As FbTransaction) As Boolean
+        Using oConnection As FbConnection = GetConnection()
+            Return ExecuteNonQueryWithConnection(SqlCommand, oConnection, TransactionMode.ExternalTransaction, Transaction)
+        End Using
     End Function
 
     ''' <summary>