diff --git a/setup.py b/setup.py
index 35f53c4..f5e0373 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@
     name="pytest-testmon",
     description="selects tests affected by changes files and methods",
     long_description=long_description,
-    version='1.0.0',
+    version="1.0.1",
     license="AGPL",
     platforms=["linux", "osx", "win32"],
     packages=["testmon",],
diff --git a/testmon/testmon_core.py b/testmon/testmon_core.py
index c677f07..d59efaf 100644
--- a/testmon/testmon_core.py
+++ b/testmon/testmon_core.py
@@ -109,7 +109,7 @@ def get_file(self, filename):
             code, checksum = read_file_with_checksum(
                 os.path.join(self.rootdir, filename)
             )
-            if code:
+            if checksum:
                 fs_mtime = os.path.getmtime(os.path.join(self.rootdir, filename))
                 self.cache[filename] = Module(
                     source_code=code,