diff --git a/DDEmailService/EmailService.vb b/DDEmailService/EmailService.vb
index 9628c889..9475dcac 100644
--- a/DDEmailService/EmailService.vb
+++ b/DDEmailService/EmailService.vb
@@ -136,15 +136,15 @@ Public Class EmailService
 
     Private Sub EmailQueue_DoWork(sender As Object, e As DoWorkEventArgs)
         Try
-            If _Firebird._DBInitialized Then
+            If _Firebird?._DBInitialized Then
                 SendEmailFrom(DatabaseType.Firebird, Nothing)
             End If
 
-            If _MSSQL.DBInitialized Then
+            If _MSSQL?.DBInitialized Then
                 SendEmailFrom(DatabaseType.MSSQL, _MSSQL)
             End If
 
-            If _MSSQL_Test.DBInitialized Then
+            If _MSSQL_Test?.DBInitialized Then
                 SendEmailFrom(DatabaseType.MSSQL, _MSSQL_Test)
             End If
         Catch ex As Exception