3 files changed, 3 insertions, 1 deletions
diff --git a/tests/plugin1.py b/tests/plugin1.py
index 63ebacf7..42769950 100644
--- a/tests/plugin1.py
+++ b/tests/plugin1.py
@@ -15,6 +15,7 @@ class Plugin(coverage.CoveragePlugin):
         """Trace only files named xyz.py"""
         if "xyz.py" in filename:
             return FileTracer(filename)
+        return None
 
     def file_reporter(self, filename):
         return FileReporter(filename)
diff --git a/tests/plugin2.py b/tests/plugin2.py
index 3bdfbdfd..9651ce63 100644
--- a/tests/plugin2.py
+++ b/tests/plugin2.py
@@ -13,6 +13,7 @@ class Plugin(coverage.CoveragePlugin):
     def file_tracer(self, filename):
         if "render.py" in filename:
             return RenderFileTracer()
+        return None
 
     def file_reporter(self, filename):
         return FileReporter(filename)
diff --git a/tests/test_execfile.py b/tests/test_execfile.py
index 032eaa29..693df71a 100644
--- a/tests/test_execfile.py
+++ b/tests/test_execfile.py
@@ -101,7 +101,7 @@ class RunFileTest(CoverageTest):
 class RunPycFileTest(CoverageTest):
     """Test cases for `run_python_file`."""
 
-    def make_pyc(self):
+    def make_pyc(self):                     # pylint: disable=inconsistent-return-statements
         """Create a .pyc file, and return the relative path to it."""
         if env.JYTHON:
             self.skipTest("Can't make .pyc files on Jython")