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-rw-r--r--BaseTools/Source/Python/UPT/Parser/DecParserMisc.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/BaseTools/Source/Python/UPT/Parser/DecParserMisc.py b/BaseTools/Source/Python/UPT/Parser/DecParserMisc.py
index 27990467d1..92dbcaaabe 100644
--- a/BaseTools/Source/Python/UPT/Parser/DecParserMisc.py
+++ b/BaseTools/Source/Python/UPT/Parser/DecParserMisc.py
@@ -25,7 +25,7 @@ from Library.ExpressionValidate import IsValidStringTest
from Library.Misc import CheckGuidRegFormat
TOOL_NAME = 'DecParser'
-VERSION_PATTERN = '[0-9]+(\.[0-9]+)?'
+VERSION_PATTERN = r'[0-9]+(\.[0-9]+)?'
CVAR_PATTERN = '[_a-zA-Z][a-zA-Z0-9_]*'
PCD_TOKEN_PATTERN = '(0[xX]0*[a-fA-F0-9]{1,8})|([0-9]+)'
MACRO_PATTERN = '[A-Z][_A-Z0-9]*'