diff --git a/BaseTools/Source/Python/Eot/EotGlobalData.py b/BaseTools/Source/Python/Eot/EotGlobalData.py
index dd4ff4cf5e..a4654853ab 100644
--- a/BaseTools/Source/Python/Eot/EotGlobalData.py
+++ b/BaseTools/Source/Python/Eot/EotGlobalData.py
@@ -70,7 +70,7 @@ gSOURCE_FILES = 'Log_SourceFiles.log'
 gOP_SOURCE_FILES = open(gSOURCE_FILES, 'w+')
 
 # Dict for GUID found in DEC files
-gGuidDict = sdict()
+gGuidDict = dict()
 
 # Dict for hard coded GUID Macros
 # {GuidName : [GuidMacro : GuidValue]}