diff --git a/pudb/settings.py b/pudb/settings.py
index 1418bfc9ad091bf1bcbcd4090d2cc371c0a1d784..18583edcb8474498e9c0fe699af720034dc43c19 100644
--- a/pudb/settings.py
+++ b/pudb/settings.py
@@ -575,7 +575,7 @@ def load_breakpoints():
         except IOError:
             pass
         else:
-            lines.extend([l.strip() for l in rc_file.readlines()])
+            lines.extend([line.strip() for line in rc_file.readlines()])
             rc_file.close()
 
     return parse_breakpoints(lines)
diff --git a/pudb/source_view.py b/pudb/source_view.py
index 3c01b5779aa2d5faad468ed281e7d019b2edc5d3..7b68fe4ad966e616cbeb4bcc22851a221553b64f 100644
--- a/pudb/source_view.py
+++ b/pudb/source_view.py
@@ -303,7 +303,7 @@ def format_source(debugger_ui, lines, breakpoints):
                 if subself.current_line:
                     shipout_line()
 
-        highlight("".join(l.expandtabs(TABSTOP) for l in lines),
+        highlight("".join(line.expandtabs(TABSTOP) for line in lines),
                 PythonLexer(stripnl=False), UrwidFormatter())
 
         return result
diff --git a/test/test_lowlevel.py b/test/test_lowlevel.py
index 9d1eafc2ede78fc4a4a56d7ab2295e79491a9a69..8262de28ed1dfd2a179e9430e1ffd2919b229be6 100644
--- a/test/test_lowlevel.py
+++ b/test/test_lowlevel.py
@@ -5,7 +5,7 @@ from pudb.py3compat import PY3
 
 def test_detect_encoding_nocookie():
     lines = [u'Test Проверка']
-    lines = [l.encode('utf-8') for l in lines]
+    lines = [line.encode('utf-8') for line in lines]
     encoding, _ = detect_encoding(iter(lines))
     assert encoding == 'utf-8'
 
@@ -16,7 +16,7 @@ def test_detect_encoding_cookie():
         u'Test',
         u'Проверка'
     ]
-    lines = [l.encode('utf-8') for l in lines]
+    lines = [line.encode('utf-8') for line in lines]
     encoding, _ = detect_encoding(iter(lines))
     assert encoding == 'utf-8'
 
@@ -27,11 +27,12 @@ def test_decode_lines():
         u'Test',
         u'Проверка',
     ]
-    lines = [l.encode('utf-8') for l in unicode_lines]
+    lines = [line.encode('utf-8') for line in unicode_lines]
     if PY3:
         assert unicode_lines == list(decode_lines(iter(lines)))
     else:
-        assert [l.decode('utf-8') for l in lines] == list(decode_lines(iter(lines)))
+        assert [line.decode('utf-8')
+                for line in lines] == list(decode_lines(iter(lines)))
 
 
 # {{{ remove common indentation