diff --git a/avocado/core/restclient/connection.py b/avocado/core/restclient/connection.py
index 5f0176e3ec5e5859d60806f721b06298bea5a26b..0386d7354f8511c4415c45aee8598f3a46394414 100644
--- a/avocado/core/restclient/connection.py
+++ b/avocado/core/restclient/connection.py
@@ -209,7 +209,7 @@ def get_default():
 
     :returns: an avocado.core.restclient.connection.Connection instance
     """
-    global CONNECTION
+    global CONNECTION  # pylint: disable=W0603
 
     if CONNECTION is None:
         CONNECTION = Connection()
diff --git a/avocado/utils/genio.py b/avocado/utils/genio.py
index 96a165bbada5bb903db13cea3247112fdf937f9f..3b7cc5f752a2bb9f567919897f8577f9f237ff76 100644
--- a/avocado/utils/genio.py
+++ b/avocado/utils/genio.py
@@ -46,7 +46,7 @@ def log_line(filename, line):
                      the dir set by set_log_file_dir().
     :param line: Line to write.
     """
-    global _open_log_files, _log_file_dir
+    global _open_log_files, _log_file_dir  # pylint: disable=W0603
 
     path = utils_path.get_path(_log_file_dir, filename)
     if path not in _open_log_files:
@@ -69,12 +69,12 @@ def set_log_file_dir(directory):
 
     :param dir: Directory for log files.
     """
-    global _log_file_dir
+    global _log_file_dir  # pylint: disable=W0603
     _log_file_dir = directory
 
 
 def close_log_file(filename):
-    global _open_log_files, _log_file_dir
+    global _open_log_files, _log_file_dir  # pylint: disable=W0603
     remove = []
     for k in _open_log_files:
         if os.path.basename(k) == filename:
diff --git a/avocado/utils/process.py b/avocado/utils/process.py
index f29df8e9b1c4b6fa6546d5f96349a1f1a2b7c2bf..8826c658e66b512e5d890f228dd1c061ad53232d 100644
--- a/avocado/utils/process.py
+++ b/avocado/utils/process.py
@@ -1169,7 +1169,7 @@ def should_run_inside_wrapper(cmd):
 
     :param cmd: the command arguments, from where we extract the binary name
     """
-    global CURRENT_WRAPPER
+    global CURRENT_WRAPPER  # pylint: disable=W0603
     CURRENT_WRAPPER = None
     args = cmd_split(cmd)
     cmd_binary_name = args[0]
diff --git a/selftests/checkall b/selftests/checkall
index 5338094d23a01947e8df613a40dad10eac598fc9..5257e7d28df79f1d0cb3339016d1fa39ce811b51 100755
--- a/selftests/checkall
+++ b/selftests/checkall
@@ -169,7 +169,7 @@ results_dir_content() {
 [ "$SKIP_RESULTSDIR_CHECK" ] || RESULTS_DIR_CONTENT="$(ls $RESULTS_DIR 2> /dev/null)"
 
 LINT_CMD="inspekt lint --exclude=.git"
-PYLINT_ENABLE="--enable R0401,W0101,W0102,W0104,W0105,W0106,W0107,W0108,W0109,W0111,W0120,W0122,W0123,W0124,W0125,W0150,W0199,W0211,W0222,W0232,W0233,W0301,W0312,W0401,W0404,W0406,W0410,W0601,W0602,W0604,W0611,W0612,W0614,W0622,W0623,W0640,W0711,W1202,W1300,W1301,W1302,W1303,W1304,W1305,W1306,W1307,W1401,W1402,W1501,W1645"
+PYLINT_ENABLE="--enable R0401,W0101,W0102,W0104,W0105,W0106,W0107,W0108,W0109,W0111,W0120,W0122,W0123,W0124,W0125,W0150,W0199,W0211,W0222,W0232,W0233,W0301,W0312,W0401,W0404,W0406,W0410,W0601,W0602,W0603,W0604,W0611,W0612,W0614,W0622,W0623,W0640,W0711,W1202,W1300,W1301,W1302,W1303,W1304,W1305,W1306,W1307,W1401,W1402,W1501,W1645"
 if [ "$AVOCADO_PARALLEL_LINT" ]; then
     LINT_CMD="$LINT_CMD --parallel=$AVOCADO_PARALLEL_LINT"
 fi