diff --git a/storable-tuple.cabal b/storable-tuple.cabal
--- a/storable-tuple.cabal
+++ b/storable-tuple.cabal
@@ -1,5 +1,5 @@
 Name:         storable-tuple
-Version:      0.0.3
+Version:      0.0.3.1
 Category:     Data, Foreign
 Synopsis:     Storable instance for pairs and triples
 Description:
@@ -16,7 +16,7 @@
 Homepage:            http://code.haskell.org/~thielema/storable-tuple/
 Stability:           Experimental
 Build-Type:          Simple
-Tested-With:         GHC==6.8.2
+Tested-With:         GHC==6.8.2, GHC==8.0.1
 Cabal-Version:       >=1.6
 Extra-Source-Files:
   unit/instance/Foreign/Storable/Unit.hs
@@ -29,20 +29,17 @@
 Source-Repository this
   Type:     darcs
   Location: http://code.haskell.org/~thielema/storable-tuple/
-  Tag:      0.0.3
+  Tag:      0.0.3.1
 
 Flag splitBase
   Description: Choose the new smaller, split-up base package.
 
-Flag instanceUnit
-  Description: Custom instance Storable ()
-
 Library
   Build-Depends:
     storable-record >=0.0.1 && <0.1,
     utility-ht >=0.0.1 && <0.1
   If flag(splitBase)
-    If flag(instanceUnit)
+    If impl(ghc<8)
       Build-Depends: base >=3 && <4.9
       Hs-Source-Dirs: unit/instance
     Else