diff --git a/test/Servant/Common/TextSpec.hs b/test/Servant/Common/TextSpec.hs
index 0f0ece51..c1af6efd 100644
--- a/test/Servant/Common/TextSpec.hs
+++ b/test/Servant/Common/TextSpec.hs
@@ -61,7 +61,7 @@ spec = describe "Servant.Common.Text" $ do
         -- http://en.wikipedia.org/wiki/Floating_point#Internal_representation
         it "holds for Double" $
             property $ \x ->
-                x < 1.0e15 && x > 1.0e-16 ==>
+                x < 1.0e15 && x > 1.0e-15 ==>
                     textLaw (x :: Double)
 
         it "holds for Float" $