diff --git a/gluon/widget.py b/gluon/widget.py
index 36b19627..beee5177 100644
--- a/gluon/widget.py
+++ b/gluon/widget.py
@@ -57,7 +57,7 @@ def run_system_tests(options):
     minor_version = sys.version_info[1]
     if major_version == 2:
         if minor_version in (6,):
-            sys.stderr.write("Python 2.6\n")
+            sys.stderr.write('Python 2.6\n')
             ret = subprocess.call(['unit2', '-v', 'gluon.tests'])
         elif minor_version in (7,):
             call_args = [sys.executable, '-m', 'unittest', '-v', 'gluon.tests']