diff --git a/Math/Functions/Functions.php b/Math/Functions/Functions.php
index eadf5a957..0cec5651e 100644
--- a/Math/Functions/Functions.php
+++ b/Math/Functions/Functions.php
@@ -331,7 +331,7 @@ final class Functions
      */
     public static function generalizedHypergeometricFunction(array $a, array $b, float $z) : float
     {
-        $sum = 0.0;
+        $sum   = 0.0;
         $aProd = \array_fill(0, 20, []);
         $bProd = \array_fill(0, 20, []);
 
diff --git a/tests/DataStorage/Session/FileSessionTest.php b/tests/DataStorage/Session/FileSessionTest.php
index 12aae7f93..fd7130de1 100644
--- a/tests/DataStorage/Session/FileSessionTest.php
+++ b/tests/DataStorage/Session/FileSessionTest.php
@@ -50,7 +50,7 @@ class FileSessionTest extends \PHPUnit\Framework\TestCase
         self::assertEquals('value', $this->session->get('test'));
     }
 
-     /**
+    /**
      * @testdox Session data cannot be overwritten
      * @group framework
      */
diff --git a/tests/Math/Stochastic/Distribution/NormalDistributionTest.php b/tests/Math/Stochastic/Distribution/NormalDistributionTest.php
index 2a3b391f7..d0e0a0c05 100644
--- a/tests/Math/Stochastic/Distribution/NormalDistributionTest.php
+++ b/tests/Math/Stochastic/Distribution/NormalDistributionTest.php
@@ -101,7 +101,7 @@ class NormalDistributionTest extends \PHPUnit\Framework\TestCase
         $sigma = 5;
 
         self::assertEquals(
-            \exp($mu * $t + $sigma ** 2 * $t **2 / 2),
+            \exp($mu * $t + $sigma ** 2 * $t ** 2 / 2),
             NormalDistribution::getMgf($t, $mu, $sigma)
         );
     }
diff --git a/tests/Math/Stochastic/Distribution/UniformDistributionContinuousTest.php b/tests/Math/Stochastic/Distribution/UniformDistributionContinuousTest.php
index 7621eeda7..436913ccb 100644
--- a/tests/Math/Stochastic/Distribution/UniformDistributionContinuousTest.php
+++ b/tests/Math/Stochastic/Distribution/UniformDistributionContinuousTest.php
@@ -102,7 +102,7 @@ class UniformDistributionContinuousTest extends \PHPUnit\Framework\TestCase
     {
         self::assertEquals(1, UniformDistributionContinuous::getMgf(0, 2, 3));
         self::assertEquals(
-            (\exp(2 * 4) - \exp(2 *3)) / (2 * (4 - 3)),
+            (\exp(2 * 4) - \exp(2 * 3)) / (2 * (4 - 3)),
             UniformDistributionContinuous::getMgf(2, 3, 4)
         );
     }