1 files changed, 1 insertions, 1 deletions
diff --git a/BaseTools/Source/Python/Common/ToolDefClassObject.py b/BaseTools/Source/Python/Common/ToolDefClassObject.py
index dc90b4783f..1ab848f1ec 100644
--- a/BaseTools/Source/Python/Common/ToolDefClassObject.py
+++ b/BaseTools/Source/Python/Common/ToolDefClassObject.py
@@ -53,7 +53,7 @@ class ToolDefClassObject(object):
         for Env in os.environ:
             self.MacroDictionary["ENV(%s)" % Env] = os.environ[Env]
 
-        if FileName != None:
+        if FileName is not None:
             self.LoadToolDefFile(FileName)
 
     ## LoadToolDefFile