diff --git a/dibi/dibi.php b/dibi/dibi.php
index 84a59ef1..ea6f0e25 100644
--- a/dibi/dibi.php
+++ b/dibi/dibi.php
@@ -111,6 +111,13 @@ class dibi
 		VERSION = '0.9',
 		REVISION = '$WCREV$ released on $WCDATE$';
 
+	/**
+	 * Configuration options
+	 */
+	const 
+		RESULT_WITH_TABLES = 'resultWithTables',
+		RESULT_OBJECTS = 'resultObjects',
+		RESULT_CLASS = 'resultClass';
 
 	/**
 	 * Connection registry storage for DibiConnection objects.
diff --git a/dibi/libs/DibiConnection.php b/dibi/libs/DibiConnection.php
index c9afb673..8fcfe91b 100644
--- a/dibi/libs/DibiConnection.php
+++ b/dibi/libs/DibiConnection.php
@@ -100,25 +100,25 @@ class DibiConnection extends DibiObject
 		}
 
 		if (isset($config['result:withtables'])) {
-			$config['resultWithTables'] = $config['result:withtables'];
+			$config[dibi::RESULT_WITH_TABLES] = $config['result:withtables'];
 			unset($config['result:withtables']);
 		}
 
 		if (isset($config['result:objects'])) {
-			$config['resultObjects'] = $config['result:objects'];
+			$config[dibi::RESULT_OBJECTS] = $config['result:objects'];
 			unset($config['result:objects']);
 		}
 
-		if (isset($config['resultObjects'])) { // normalize
-			$val = $config['resultObjects'];
-			$config['resultObjects'] = is_string($val) && !is_numeric($val) ? $val : (bool) $val;
+		if (isset($config[dibi::RESULT_OBJECTS])) { // normalize
+			$val = $config[dibi::RESULT_OBJECTS];
+			$config[dibi::RESULT_OBJECTS] = is_string($val) && !is_numeric($val) ? $val : (bool) $val;
 		}
 
-		if (isset($config['resultClass'])) {
-			if (strcasecmp($config['resultClass'], 'DibiResult') && !is_subclass_of($config['resultClass'], 'DibiResult')) {
+		if (isset($config[dibi::RESULT_CLASS])) {
+			if (strcasecmp($config[dibi::RESULT_CLASS], 'DibiResult') && !is_subclass_of($config[dibi::RESULT_CLASS], 'DibiResult')) {
 				throw new InvalidArgumentException("Class '$config[resultClass]' is not DibiResult descendant.");
 			}
-			$this->resultClass = $config['resultClass'];
+			$this->resultClass = $config[dibi::RESULT_CLASS];
 		}
 
 		$config['name'] = $name;
diff --git a/dibi/libs/DibiResult.php b/dibi/libs/DibiResult.php
index 50f4ac0f..1814feb6 100644
--- a/dibi/libs/DibiResult.php
+++ b/dibi/libs/DibiResult.php
@@ -89,12 +89,12 @@ class DibiResult extends DibiObject implements IDataSource
 	{
 		$this->driver = $driver;
 
-		if (!empty($config['resultWithTables'])) {
+		if (!empty($config[dibi::RESULT_WITH_TABLES])) {
 			$this->setWithTables(TRUE);
 		}
 
-		if (isset($config['resultObjects'])) {
-			$this->setObjects($config['resultObjects']);
+		if (isset($config[dibi::RESULT_OBJECTS])) {
+			$this->setObjects($config[dibi::RESULT_OBJECTS]);
 		}
 	}
 
diff --git a/dibi/libs/DibiTable.php b/dibi/libs/DibiTable.php
index 90c0bee9..1a72685a 100644
--- a/dibi/libs/DibiTable.php
+++ b/dibi/libs/DibiTable.php
@@ -297,7 +297,7 @@ abstract class DibiTable extends DibiObject
 		$row = $this->blankRow;
 		$row[$this->primary] = NULL;
 
-		if ($class = $this->connection->getConfig('resultObjects')) {
+		if ($class = $this->connection->getConfig(dibi::RESULT_OBJECTS)) {
 			if ($class === TRUE) {
 				$row = (object) $row;
 			} else {