diff --git a/pysnooper/tracer.py b/pysnooper/tracer.py
index 6303083..db349ec 100644
--- a/pysnooper/tracer.py
+++ b/pysnooper/tracer.py
@@ -139,9 +139,7 @@ class Tracer:
         if self.overwrite and not self._did_overwrite:
             self.truncate()
             self._did_overwrite = True
-        s = '{self.prefix}{s}\n'.format(**locals())
-        if isinstance(s, bytes): # Python 2 compatibility
-            s = s.decode()
+        s = u'{self.prefix}{s}\n'.format(**locals())
         self._write(s)
 
     def __enter__(self):
diff --git a/tests/test_pysnooper.py b/tests/test_pysnooper.py
index 195926e..81f7102 100644
--- a/tests/test_pysnooper.py
+++ b/tests/test_pysnooper.py
@@ -275,13 +275,11 @@ def test_unavailable_source():
             sys_tools.TempSysPathAdder(str(folder)):
         module_name = 'iaerojajsijf'
         python_file_path = folder / ('%s.py' % (module_name,))
-        content = ('import pysnooper\n'
+        content = (u'import pysnooper\n'
                    '\n'
                    '@pysnooper.snoop()\n'
                    'def f(x):\n'
                    '    return x\n')
-        if six.PY2:
-            content = content.decode()
         with python_file_path.open('w') as python_file:
             python_file.write(content)
         module = __import__(module_name)