diff --git a/tests.py b/tests.py
index 7aa6f445c61f56fbd1d51c29d742fbde813ef539..c42f83f13ae3dc6e8c709e9ff5b10d55d7e8ec97 100644
--- a/tests.py
+++ b/tests.py
@@ -103,7 +103,7 @@ class TestComputeFstat(Test):
                                                        Writer.Alpha,
                                                        Writer.Delta)
         print predicted_FS, FS
-        self.assertTrue(np.abs(predicted_FS-FS)/FS < 0.1)
+        self.assertTrue(np.abs(predicted_FS-FS)/FS < 0.2)
 
 
 class TestSemiCoherentGlitchSearch(Test):