diff --git a/.github/workflows/CI.yaml b/.github/workflows/CI.yaml
index 146b8c6..93d1095 100644
--- a/.github/workflows/CI.yaml
+++ b/.github/workflows/CI.yaml
@@ -40,3 +40,16 @@ jobs:
         run: stack build --system-ghc --test --bench --no-run-tests --no-run-benchmarks
       - name: Run tests
         run: stack test
+  hlint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: "Set up HLint"
+        uses: haskell/actions/hlint-setup@v2
+
+      - name: "Run HLint"
+        uses: haskell/actions/hlint-run@v2
+        with:
+          path: src/
+          fail-on: warning
diff --git a/LICENSE b/LICENSE
index c5b6c16..e462349 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright Author name here (c) 2023
+Copyright Kubishkin Efim (c) 2023
 
 All rights reserved.
 
diff --git a/package.yaml b/package.yaml
index 4aa2e12..bac5ccc 100644
--- a/package.yaml
+++ b/package.yaml
@@ -1,10 +1,10 @@
 name: matrix-lib-proj
 version: 0.1.0.0
-github: "githubuser/matrix-lib-proj"
+github: "KubEF/matrix-lib-proj"
 license: BSD3
-author: "Author name here"
-maintainer: "example@example.com"
-copyright: "2023 Author name here"
+author: "Kubishkin Efim"
+maintainer: "efimkub@mail.ru"
+copyright: "2023 Kubishkin Efim"
 
 extra-source-files:
   - README.md
@@ -17,7 +17,7 @@ extra-source-files:
 # To avoid duplicated efforts in documentation and dealing with the
 # complications of embedding Haddock markup inside cabal files, it is
 # common to point users to the README.md file.
-description: Please see the README on GitHub at <https://github.com/githubuser/matrix-lib-proj#readme>
+description: Please see the README on GitHub at <https://github.com/KubEF/matrix-lib#readme>
 
 dependencies:
   - base >= 4.7 && < 5
diff --git a/src/Helpers.hs b/src/Helpers.hs
index 435ba62..f96ab58 100644
--- a/src/Helpers.hs
+++ b/src/Helpers.hs
@@ -77,5 +77,7 @@ tupleToList2 (a, b) = [a, b]
 triplePart :: [a] -> [[a]]
 triplePart l = [[l !! n, l !! (n + 1), l !! (n + 2)] | n <- [0, 2 .. (length l - 3)]]
 
-lsEvenWithOne :: (Num a, Enum a) => a -> [a]
-lsEvenWithOne n = 1 : [2, 4 .. n]
+lsEvenWithOne :: (Integral a) => a -> [a]
+lsEvenWithOne n
+    | even n = 1 : [2, 4 .. n]
+    | otherwise = 1 : [2, 4 .. n + 1]