diff --git a/poky/meta/lib/patchtest/tests/base.py b/poky/meta/lib/patchtest/tests/base.py
index aecbbc4..424e61b 100644
--- a/poky/meta/lib/patchtest/tests/base.py
+++ b/poky/meta/lib/patchtest/tests/base.py
@@ -34,8 +34,8 @@
 class Base(unittest.TestCase):
     # if unit test fails, fail message will throw at least the following JSON: {"id": <testid>}
 
-    endcommit_messages_regex = re.compile('\(From \w+-\w+ rev:|(?<!\S)Signed-off-by|(?<!\S)---\n')
-    patchmetadata_regex   = re.compile('-{3} \S+|\+{3} \S+|@{2} -\d+,\d+ \+\d+,\d+ @{2} \S+')
+    endcommit_messages_regex = re.compile(r'\(From \w+-\w+ rev:|(?<!\S)Signed-off-by|(?<!\S)---\n')
+    patchmetadata_regex   = re.compile(r'-{3} \S+|\+{3} \S+|@{2} -\d+,\d+ \+\d+,\d+ @{2} \S+')
 
 
     @staticmethod