diff --git a/Domain/Model/Helper/DateTimeHelper.php b/Domain/Model/Helper/DateTimeHelper.php
index 7bba51e..bc7b054 100755
--- a/Domain/Model/Helper/DateTimeHelper.php
+++ b/Domain/Model/Helper/DateTimeHelper.php
@@ -58,7 +58,7 @@ public static function createOrFix($value = null, $defaultValue = null)
             return self::createFromString($value);
         }
 
-        throw new \Exception('Unkown format');
+        throw new \Exception('Unknown format');
     }
 
     /**
diff --git a/Infrastructure/Persistence/Doctrine/LoggableMigration.php b/Infrastructure/Persistence/Doctrine/LoggableMigration.php
index 4907ef8..c0c849c 100644
--- a/Infrastructure/Persistence/Doctrine/LoggableMigration.php
+++ b/Infrastructure/Persistence/Doctrine/LoggableMigration.php
@@ -60,7 +60,7 @@ private function logChanges(string $direction)
 
         foreach ($this->queries as $query) {
             $event = new EntityWasUpdated(
-                'unkown',
+                'unknown',
                 0,
                 [
                     'query' => $query,
diff --git a/Infrastructure/Persistence/Doctrine/Model/Helper/CriteriaHelper.php b/Infrastructure/Persistence/Doctrine/Model/Helper/CriteriaHelper.php
index 820ffb0..228f603 100755
--- a/Infrastructure/Persistence/Doctrine/Model/Helper/CriteriaHelper.php
+++ b/Infrastructure/Persistence/Doctrine/Model/Helper/CriteriaHelper.php
@@ -281,7 +281,7 @@ public static function append(string $operator, Criteria $baseCriteria, Criteria
     {
         $operator = strtoupper($operator);
         if (!in_array($operator, [CompositeExpression::TYPE_OR, CompositeExpression::TYPE_AND])) {
-            throw new \InvalidArgumentException('Unkown operator ' . $operator);
+            throw new \InvalidArgumentException('Unknown operator ' . $operator);
         }
 
         /** @var CompositeExpression $expression */