diff --git a/poky/meta/lib/oeqa/selftest/cases/sstatetests.py b/poky/meta/lib/oeqa/selftest/cases/sstatetests.py
index 077d6e5..938e654 100644
--- a/poky/meta/lib/oeqa/selftest/cases/sstatetests.py
+++ b/poky/meta/lib/oeqa/selftest/cases/sstatetests.py
@@ -96,14 +96,14 @@
         bitbake(['-ccleansstate'] + targets)
 
         bitbake(targets)
-        tgz_created = self.search_sstate('|'.join(map(str, [s + '.*?\.tgz$' for s in targets])), distro_specific, distro_nonspecific)
+        tgz_created = self.search_sstate('|'.join(map(str, [s + r'.*?\.tgz$' for s in targets])), distro_specific, distro_nonspecific)
         self.assertTrue(tgz_created, msg="Could not find sstate .tgz files for: %s (%s)" % (', '.join(map(str, targets)), str(tgz_created)))
 
-        siginfo_created = self.search_sstate('|'.join(map(str, [s + '.*?\.siginfo$' for s in targets])), distro_specific, distro_nonspecific)
+        siginfo_created = self.search_sstate('|'.join(map(str, [s + r'.*?\.siginfo$' for s in targets])), distro_specific, distro_nonspecific)
         self.assertTrue(siginfo_created, msg="Could not find sstate .siginfo files for: %s (%s)" % (', '.join(map(str, targets)), str(siginfo_created)))
 
         bitbake(['-ccleansstate'] + targets)
-        tgz_removed = self.search_sstate('|'.join(map(str, [s + '.*?\.tgz$' for s in targets])), distro_specific, distro_nonspecific)
+        tgz_removed = self.search_sstate('|'.join(map(str, [s + r'.*?\.tgz$' for s in targets])), distro_specific, distro_nonspecific)
         self.assertTrue(not tgz_removed, msg="do_cleansstate didn't remove .tgz sstate files for: %s (%s)" % (', '.join(map(str, targets)), str(tgz_removed)))
 
     @OETestID(977)
@@ -130,14 +130,14 @@
         bitbake(['-ccleansstate'] + targets)
 
         bitbake(targets)
-        results = self.search_sstate('|'.join(map(str, [s + '.*?\.tgz$' for s in targets])), distro_specific=False, distro_nonspecific=True)
+        results = self.search_sstate('|'.join(map(str, [s + r'.*?\.tgz$' for s in targets])), distro_specific=False, distro_nonspecific=True)
         filtered_results = []
         for r in results:
             if r.endswith(("_populate_lic.tgz", "_populate_lic.tgz.siginfo")):
                 continue
             filtered_results.append(r)
         self.assertTrue(filtered_results == [], msg="Found distro non-specific sstate for: %s (%s)" % (', '.join(map(str, targets)), str(filtered_results)))
-        file_tracker_1 = self.search_sstate('|'.join(map(str, [s + '.*?\.tgz$' for s in targets])), distro_specific=True, distro_nonspecific=False)
+        file_tracker_1 = self.search_sstate('|'.join(map(str, [s + r'.*?\.tgz$' for s in targets])), distro_specific=True, distro_nonspecific=False)
         self.assertTrue(len(file_tracker_1) >= len(targets), msg = "Not all sstate files ware created for: %s" % ', '.join(map(str, targets)))
 
         self.track_for_cleanup(self.distro_specific_sstate + "_old")
@@ -146,7 +146,7 @@
 
         bitbake(['-cclean'] + targets)
         bitbake(targets)
-        file_tracker_2 = self.search_sstate('|'.join(map(str, [s + '.*?\.tgz$' for s in targets])), distro_specific=True, distro_nonspecific=False)
+        file_tracker_2 = self.search_sstate('|'.join(map(str, [s + r'.*?\.tgz$' for s in targets])), distro_specific=True, distro_nonspecific=False)
         self.assertTrue(len(file_tracker_2) >= len(targets), msg = "Not all sstate files ware created for: %s" % ', '.join(map(str, targets)))
 
         not_recreated = [x for x in file_tracker_1 if x not in file_tracker_2]
@@ -192,18 +192,18 @@
             if not sstate_arch in sstate_archs_list:
                 sstate_archs_list.append(sstate_arch)
             if target_config[idx] == target_config[-1]:
-                target_sstate_before_build = self.search_sstate(target + '.*?\.tgz$')
+                target_sstate_before_build = self.search_sstate(target + r'.*?\.tgz$')
             bitbake("-cclean %s" % target)
             result = bitbake(target, ignore_status=True)
             if target_config[idx] == target_config[-1]:
-                target_sstate_after_build = self.search_sstate(target + '.*?\.tgz$')
+                target_sstate_after_build = self.search_sstate(target + r'.*?\.tgz$')
                 expected_remaining_sstate += [x for x in target_sstate_after_build if x not in target_sstate_before_build if not any(pattern in x for pattern in ignore_patterns)]
             self.remove_config(global_config[idx])
             self.remove_recipeinc(target, target_config[idx])
             self.assertEqual(result.status, 0, msg = "build of %s failed with %s" % (target, result.output))
 
         runCmd("sstate-cache-management.sh -y --cache-dir=%s --remove-duplicated --extra-archs=%s" % (self.sstate_path, ','.join(map(str, sstate_archs_list))))
-        actual_remaining_sstate = [x for x in self.search_sstate(target + '.*?\.tgz$') if not any(pattern in x for pattern in ignore_patterns)]
+        actual_remaining_sstate = [x for x in self.search_sstate(target + r'.*?\.tgz$') if not any(pattern in x for pattern in ignore_patterns)]
 
         actual_not_expected = [x for x in actual_remaining_sstate if x not in expected_remaining_sstate]
         self.assertFalse(actual_not_expected, msg="Files should have been removed but ware not: %s" % ', '.join(map(str, actual_not_expected)))