diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -3,3 +3,7 @@
 ## 0.1.0.0 -- 2020-09-01
 
 * First version. Released on an unsuspecting world.
+
+## 0.1.1.0 -- 2020-09-01
+
+* First version revised A. Fixed issue with being not compiled for GHC 7.8* series.
diff --git a/Languages/UniquenessPeriods/Vector/Properties.hs b/Languages/UniquenessPeriods/Vector/Properties.hs
--- a/Languages/UniquenessPeriods/Vector/Properties.hs
+++ b/Languages/UniquenessPeriods/Vector/Properties.hs
@@ -26,5 +26,5 @@
   Eq a => UniquenessGeneral2 a -- ^ Is gotten after the application of the 'uniquenessPeriodsVector2'.
   -> Int  -- ^ The resulting value.
 diverse v 
-  | null v = 0
-  | otherwise = V.sum . V.map (\(x,_) -> if null x then 0::Int else minimum x) $ v
+  | V.null v = 0
+  | otherwise = V.sum . V.map (\(xs,_) -> if null xs then 0::Int else minimum xs) $ v
diff --git a/uniqueness-periods-vector-properties.cabal b/uniqueness-periods-vector-properties.cabal
--- a/uniqueness-periods-vector-properties.cabal
+++ b/uniqueness-periods-vector-properties.cabal
@@ -3,7 +3,7 @@
 -- http://haskell.org/cabal/users-guide/
 
 name:                uniqueness-periods-vector-properties
-version:             0.1.0.0
+version:             0.1.1.0
 synopsis:            Metrics for the maximum element for the uniqueness-periods-vector packages family.
 description:         Metrics for the maximum element for the uniqueness-periods-vector packages family. Generalization of the DobutokO.Poetry.Norms and DobutokO.Poetry.Norms.Extended modules from dobuotokO-poetry package.
 homepage:            https://hackage.haskell.org/package/uniqueness-periods-vector-properties