diff --git a/QuickCheck-safe.cabal b/QuickCheck-safe.cabal
--- a/QuickCheck-safe.cabal
+++ b/QuickCheck-safe.cabal
@@ -1,5 +1,5 @@
 name:                QuickCheck-safe
-version:             0.1
+version:             0.1.0.1
 synopsis:            Safe reimplementation of QuickCheck's core
 description:
   QuickCheck-safe reimplements the quickCheck functionality with a pure
@@ -32,7 +32,7 @@
 library
   hs-source-dirs:    src
   build-depends:
-    QuickCheck >= 2.8 && < 2.9,
+    QuickCheck >= 2.7 && < 2.9,
     base >= 4.6 && < 5
   exposed-modules:
     Test.QuickCheck.Safe
diff --git a/src/Test/QuickCheck/Safe.hs b/src/Test/QuickCheck/Safe.hs
--- a/src/Test/QuickCheck/Safe.hs
+++ b/src/Test/QuickCheck/Safe.hs
@@ -154,7 +154,8 @@
 
 -- | Adjust testcase sizes. Cf. 'Test.QuickCheck.mapSize'.
 mapSize :: STestable prop => (Int -> Int) -> prop -> SProperty
-mapSize f = MkSProperty . scale f . unSProperty . sProperty
+mapSize f = MkSProperty . scale f . unSProperty . sProperty where
+    scale f a = sized (\n -> resize (f n) a)
 
 -- Other combinators that may be considered: