diff --git a/src/Statements/ForeignKeyDefinition.php b/src/Statements/ForeignKeyDefinition.php
index c7a9e23..c848e34 100644
--- a/src/Statements/ForeignKeyDefinition.php
+++ b/src/Statements/ForeignKeyDefinition.php
@@ -27,10 +27,10 @@ class ForeignKeyDefinition implements IStatement
 		/** @var string */
 		private $targetColumns;
 
-		/** @var int */
+		/** @var string */
 		private $onUpdateAction = self::ACTION_RESTRICT;
 
-		/** @var int */
+		/** @var string */
 		private $onDeleteAction = self::ACTION_RESTRICT;
 
 
@@ -64,7 +64,7 @@ public function __construct($name, $columns = array(), $targetTable, $targetColu
 
 
 		/**
-		 * @param  int
+		 * @param  string
 		 * @return self
 		 */
 		public function setOnUpdateAction($onUpdateAction)
@@ -79,7 +79,7 @@ public function setOnUpdateAction($onUpdateAction)
 
 
 		/**
-		 * @param  int
+		 * @param  string
 		 * @return self
 		 */
 		public function setOnDeleteAction($onDeleteAction)
diff --git a/src/Statements/IndexColumnDefinition.php b/src/Statements/IndexColumnDefinition.php
index e44a3ec..17274e6 100644
--- a/src/Statements/IndexColumnDefinition.php
+++ b/src/Statements/IndexColumnDefinition.php
@@ -16,7 +16,7 @@ class IndexColumnDefinition implements IStatement
 		/** @var string|NULL */
 		private $name;
 
-		/** @var int */
+		/** @var string */
 		private $order;
 
 		/** @var int|NULL */
@@ -37,7 +37,7 @@ public function __construct($name, $order = self::ASC, $length = NULL)
 
 
 		/**
-		 * @param  int
+		 * @param  string
 		 * @return self
 		 */
 		private function setOrder($order)
diff --git a/src/Statements/IndexDefinition.php b/src/Statements/IndexDefinition.php
index 7ca9cea..92aeaaf 100644
--- a/src/Statements/IndexDefinition.php
+++ b/src/Statements/IndexDefinition.php
@@ -18,10 +18,10 @@ class IndexDefinition implements IStatement
 		/** @var string|NULL */
 		private $name;
 
-		/** @var int */
+		/** @var string */
 		private $type;
 
-		/** @var string[] */
+		/** @var IndexColumnDefinition[] */
 		private $columns = array();