defer creation of locking model to ActivateOptions
diff --git a/src/log4net/Appender/FileAppender.cs b/src/log4net/Appender/FileAppender.cs
index bf78271..af0b387 100644
--- a/src/log4net/Appender/FileAppender.cs
+++ b/src/log4net/Appender/FileAppender.cs
@@ -1657,7 +1657,7 @@
/// <summary>
/// The locking model to use
/// </summary>
- private FileAppender.LockingModelBase m_lockingModel = new FileAppender.ExclusiveLock();
+ private FileAppender.LockingModelBase m_lockingModel;
#endregion Private Instance Fields