diff --git a/src/Exceptions/AfterAllAlreadyExist.php b/src/Exceptions/AfterAllAlreadyExist.php
index f74e8b51..5aea0c55 100644
--- a/src/Exceptions/AfterAllAlreadyExist.php
+++ b/src/Exceptions/AfterAllAlreadyExist.php
@@ -19,6 +19,6 @@ final class AfterAllAlreadyExist extends InvalidArgumentException implements Exc
      */
     public function __construct(string $filename)
     {
-        parent::__construct(sprintf('The afterAll already exist in the filename `%s`.', $filename));
+        parent::__construct(sprintf('The afterAll already exists in the filename `%s`.', $filename));
     }
 }
diff --git a/src/Exceptions/AfterEachAlreadyExist.php b/src/Exceptions/AfterEachAlreadyExist.php
index 43faa817..cbdd4a7c 100644
--- a/src/Exceptions/AfterEachAlreadyExist.php
+++ b/src/Exceptions/AfterEachAlreadyExist.php
@@ -19,6 +19,6 @@ final class AfterEachAlreadyExist extends InvalidArgumentException implements Ex
      */
     public function __construct(string $filename)
     {
-        parent::__construct(sprintf('The afterEach already exist in the filename `%s`.', $filename));
+        parent::__construct(sprintf('The afterEach already exists in the filename `%s`.', $filename));
     }
 }
diff --git a/src/Exceptions/BeforeEachAlreadyExist.php b/src/Exceptions/BeforeEachAlreadyExist.php
index fba76297..2425ce7f 100644
--- a/src/Exceptions/BeforeEachAlreadyExist.php
+++ b/src/Exceptions/BeforeEachAlreadyExist.php
@@ -19,6 +19,6 @@ final class BeforeEachAlreadyExist extends InvalidArgumentException implements E
      */
     public function __construct(string $filename)
     {
-        parent::__construct(sprintf('The beforeEach already exist in the filename `%s`.', $filename));
+        parent::__construct(sprintf('The beforeEach already exists in the filename `%s`.', $filename));
     }
 }
diff --git a/src/Exceptions/DatasetAlreadyExists.php b/src/Exceptions/DatasetAlreadyExists.php
index 4e42397a..bef2753d 100644
--- a/src/Exceptions/DatasetAlreadyExists.php
+++ b/src/Exceptions/DatasetAlreadyExists.php
@@ -19,6 +19,6 @@ final class DatasetAlreadyExists extends InvalidArgumentException implements Exc
      */
     public function __construct(string $name, string $scope)
     {
-        parent::__construct(sprintf('A dataset with the name `%s` already exist in scope [%s].', $name, $scope));
+        parent::__construct(sprintf('A dataset with the name `%s` already exists in scope [%s].', $name, $scope));
     }
 }
diff --git a/src/Exceptions/FileOrFolderNotFound.php b/src/Exceptions/FileOrFolderNotFound.php
index bd59ac2a..8e6a08d6 100644
--- a/src/Exceptions/FileOrFolderNotFound.php
+++ b/src/Exceptions/FileOrFolderNotFound.php
@@ -19,6 +19,6 @@ final class FileOrFolderNotFound extends InvalidArgumentException implements Exc
      */
     public function __construct(string $filename)
     {
-        parent::__construct(sprintf('The file or folder with the name `%s` not found.', $filename));
+        parent::__construct(sprintf('The file or folder with the name `%s` could not be found.', $filename));
     }
 }
diff --git a/src/Exceptions/TestAlreadyExist.php b/src/Exceptions/TestAlreadyExist.php
index 75f4a420..07ff6a72 100644
--- a/src/Exceptions/TestAlreadyExist.php
+++ b/src/Exceptions/TestAlreadyExist.php
@@ -19,6 +19,6 @@ final class TestAlreadyExist extends InvalidArgumentException implements Excepti
      */
     public function __construct(string $fileName, string $description)
     {
-        parent::__construct(sprintf('A test with the description `%s` already exist in the filename `%s`.', $description, $fileName));
+        parent::__construct(sprintf('A test with the description `%s` already exists in the filename `%s`.', $description, $fileName));
     }
 }
diff --git a/src/Exceptions/TestDescriptionMissing.php b/src/Exceptions/TestDescriptionMissing.php
index 67f75930..b9fcc684 100644
--- a/src/Exceptions/TestDescriptionMissing.php
+++ b/src/Exceptions/TestDescriptionMissing.php
@@ -19,6 +19,6 @@ final class TestDescriptionMissing extends InvalidArgumentException implements E
      */
     public function __construct(string $fileName)
     {
-        parent::__construct(sprintf('Test misses description in the filename `%s`.', $fileName));
+        parent::__construct(sprintf('Test description is missing in the filename `%s`.', $fileName));
     }
 }
diff --git a/tests/Features/DatasetsTests.php b/tests/Features/DatasetsTests.php
index 5d1b1ca1..f6030926 100644
--- a/tests/Features/DatasetsTests.php
+++ b/tests/Features/DatasetsTests.php
@@ -19,7 +19,7 @@ it('throws exception if dataset does not exist', function () {
 it('throws exception if dataset already exist', function () {
     DatasetsRepository::set('second', [[]], __DIR__);
     $this->expectException(DatasetAlreadyExists::class);
-    $this->expectExceptionMessage('A dataset with the name `second` already exist in scope ['.__DIR__.'].');
+    $this->expectExceptionMessage('A dataset with the name `second` already exists in scope ['.__DIR__.'].');
     DatasetsRepository::set('second', [[]], __DIR__);
 });
 
diff --git a/tests/Unit/TestSuite.php b/tests/Unit/TestSuite.php
index 3c4ff2a1..eb033d0c 100644
--- a/tests/Unit/TestSuite.php
+++ b/tests/Unit/TestSuite.php
@@ -13,7 +13,7 @@ it('does not allow to add the same test description twice', function () {
     $testSuite->tests->set($method);
 })->throws(
     TestAlreadyExist::class,
-    sprintf('A test with the description `%s` already exist in the filename `%s`.', 'bar', 'foo'),
+    sprintf('A test with the description `%s` already exists in the filename `%s`.', 'bar', 'foo'),
 );
 
 it('alerts users about tests with arguments but no input', function () {