diff --git a/BaseTools/Source/Python/Common/DataType.py b/BaseTools/Source/Python/Common/DataType.py
index 0bc2306ea6..1199f82ad1 100644
--- a/BaseTools/Source/Python/Common/DataType.py
+++ b/BaseTools/Source/Python/Common/DataType.py
@@ -76,7 +76,7 @@ SUP_MODULE_MM_CORE_STANDALONE = 'MM_CORE_STANDALONE'
 SUP_MODULE_LIST = [SUP_MODULE_BASE, SUP_MODULE_SEC, SUP_MODULE_PEI_CORE, SUP_MODULE_PEIM, SUP_MODULE_DXE_CORE, SUP_MODULE_DXE_DRIVER, \
                    SUP_MODULE_DXE_RUNTIME_DRIVER, SUP_MODULE_DXE_SAL_DRIVER, SUP_MODULE_DXE_SMM_DRIVER, SUP_MODULE_UEFI_DRIVER, \
                    SUP_MODULE_UEFI_APPLICATION, SUP_MODULE_USER_DEFINED, SUP_MODULE_SMM_CORE, SUP_MODULE_MM_STANDALONE, SUP_MODULE_MM_CORE_STANDALONE]
-SUP_MODULE_LIST_STRING = TAB_VALUE_SPLIT.join(l for l in SUP_MODULE_LIST)
+SUP_MODULE_LIST_STRING = TAB_VALUE_SPLIT.join(SUP_MODULE_LIST)
 
 EDK_COMPONENT_TYPE_LIBRARY = 'LIBRARY'
 EDK_COMPONENT_TYPE_SECUARITY_CORE = 'SECUARITY_CORE'