diff --git a/DataStorage/Database/Query/Builder.php b/DataStorage/Database/Query/Builder.php
index c3cfa350d..0cfa63f4c 100644
--- a/DataStorage/Database/Query/Builder.php
+++ b/DataStorage/Database/Query/Builder.php
@@ -116,7 +116,7 @@ class Builder extends BuilderAbstract
     /**
      * Limit.
      *
-     * @var array
+     * @var int
      * @since 1.0.0
      */
     public $limit = null;
diff --git a/DataStorage/Database/Query/Grammar/Grammar.php b/DataStorage/Database/Query/Grammar/Grammar.php
index 8f37b6e04..bd3b188a1 100644
--- a/DataStorage/Database/Query/Grammar/Grammar.php
+++ b/DataStorage/Database/Query/Grammar/Grammar.php
@@ -300,7 +300,7 @@ class Grammar extends GrammarAbstract
      * @since  1.0.0
      * @author Dennis Eichhorn <d.eichhorn@oms.com>
      */
-    protected function compileLimit(Builder $query, $limit) : string
+    protected function compileLimit(Builder $query, int $limit) : string
     {
         return 'LIMIT ' . $limit;
     }
diff --git a/DataStorage/Database/Query/Grammar/MicrosoftGrammar.php b/DataStorage/Database/Query/Grammar/MicrosoftGrammar.php
index 0e6ac72d2..a1f5780ed 100644
--- a/DataStorage/Database/Query/Grammar/MicrosoftGrammar.php
+++ b/DataStorage/Database/Query/Grammar/MicrosoftGrammar.php
@@ -15,6 +15,7 @@
  */
 
 namespace phpOMS\DataStorage\Database\Query\Grammar;
+use phpOMS\DataStorage\Database\Query\Builder;
 
 /**
  * Grammar class.
diff --git a/DataStorage/Database/Query/Grammar/MysqlGrammar.php b/DataStorage/Database/Query/Grammar/MysqlGrammar.php
index 30f7622cc..ad7dc54e8 100644
--- a/DataStorage/Database/Query/Grammar/MysqlGrammar.php
+++ b/DataStorage/Database/Query/Grammar/MysqlGrammar.php
@@ -15,6 +15,7 @@
  */
 
 namespace phpOMS\DataStorage\Database\Query\Grammar;
+use phpOMS\DataStorage\Database\Query\Builder;
 
 /**
  * Grammar class.
diff --git a/DataStorage/Database/Query/Grammar/OracleGrammar.php b/DataStorage/Database/Query/Grammar/OracleGrammar.php
index 58d8e0b8a..e89bd8431 100644
--- a/DataStorage/Database/Query/Grammar/OracleGrammar.php
+++ b/DataStorage/Database/Query/Grammar/OracleGrammar.php
@@ -15,6 +15,7 @@
  */
 
 namespace phpOMS\DataStorage\Database\Query\Grammar;
+use phpOMS\DataStorage\Database\Query\Builder;
 
 /**
  * Grammar class.
diff --git a/DataStorage/Database/Query/Grammar/PostgresGrammar.php b/DataStorage/Database/Query/Grammar/PostgresGrammar.php
index fac4df664..682fa397c 100644
--- a/DataStorage/Database/Query/Grammar/PostgresGrammar.php
+++ b/DataStorage/Database/Query/Grammar/PostgresGrammar.php
@@ -15,6 +15,7 @@
  */
 
 namespace phpOMS\DataStorage\Database\Query\Grammar;
+use phpOMS\DataStorage\Database\Query\Builder;
 
 /**
  * Grammar class.
diff --git a/DataStorage/Database/Query/Grammar/SQLiteGrammar.php b/DataStorage/Database/Query/Grammar/SQLiteGrammar.php
index f2bc8765c..be6d75fd9 100644
--- a/DataStorage/Database/Query/Grammar/SQLiteGrammar.php
+++ b/DataStorage/Database/Query/Grammar/SQLiteGrammar.php
@@ -15,6 +15,7 @@
  */
 
 namespace phpOMS\DataStorage\Database\Query\Grammar;
+use phpOMS\DataStorage\Database\Query\Builder;
 
 /**
  * Grammar class.