diff --git a/.gitignore b/.gitignore
index b24b4f49cce77c60043a94a34c37d29398867853..ba4027b5b3606430492c6a7b5d4a8f977b765546 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
  __pycache__
  .coverage
+ .ipynb_checkpoints
diff --git a/ci/mypy.sh b/ci/mypy.sh
index 65d6a91267c38125d277d77c9160f1a51ad8f5e8..878b51cf1a2cfb52ef0e5cc35c68206cf4b36f9d 100644
--- a/ci/mypy.sh
+++ b/ci/mypy.sh
@@ -1,8 +1,5 @@
 #!/bin/bash
 
-# What percentage of the code has to be annotated
-THRESHOLD=0.75
-
 # Create Log file
 touch mypy_output.txt
 
@@ -26,18 +23,16 @@ for directory in $( cat directories.txt ); do
 done
 
 # If nothing has been checked
-if [[ $nPasses == 0 && $nErrors == 0 ]]; then
+if [[ $nPasses == 0 ]]; then
     echo "mypy hasn't found any code to check"
-    exit 0
-else
-    # Calculate the ratio of errors
-    percentage=$( python3 -c "print($nPasses/($nErrors+$nPasses))" )
+    exit 1
 fi
 
 rm linecount.txt
 
-if [[ $percentage > $THRESHOLD ]]; then
-    echo "The number of type-errors is below the threshold. Check passed"
+if [[ $nErrors -eq 0 ]]; then
+    echo "No errors found. Check passed"
+    echo "mypy checked ${nPasses} lines of code"
     
     # Create new Badge
 	rm mypy.svg
@@ -45,7 +40,7 @@ if [[ $percentage > $THRESHOLD ]]; then
     
     exit 0
 else
-    echo "mypy found enough errors in the code. You might want to check your code again"
+    echo "mypy found errors in the code. You might want to check your code again"
     echo "Maybe take a look at mypy_output.txt"
     
     # Create Badge
diff --git a/src/main.py b/src/main.py
index e2d989cba1d3971b2340a32abb8755a79bd1dae6..92840766f68ca8d6cbb10f578eae5c4952e4b31d 100644
--- a/src/main.py
+++ b/src/main.py
@@ -1,5 +1,7 @@
+from typing import Any
+
 class Test:
-    def __init__(self, arg: any):
+    def __init__(self, arg: Any) -> None:
         """Test."""
         print(arg)
 
diff --git a/src/test_sample.py b/src/test_sample.py
index fdd24f158df16bade504c12957ffa24386b7c132..3c23ddc5c272b5b0d2c1a1c1fae7d358eb6d6c32 100644
--- a/src/test_sample.py
+++ b/src/test_sample.py
@@ -2,5 +2,5 @@ def inc(x: int) -> int:
     return x + 1
 
 
-def test_answer():
+def test_answer() -> None:
     assert inc(3) ==4