diff --git a/dibi/libs/DibiConnection.php b/dibi/libs/DibiConnection.php
index 828d41f..043e38e 100644
--- a/dibi/libs/DibiConnection.php
+++ b/dibi/libs/DibiConnection.php
@@ -629,11 +629,12 @@ class DibiConnection extends DibiObject
 
 	/**
 	 * @param  IDibiProfiler
-	 * @return void
+	 * @return DibiConnection  provides a fluent interface
 	 */
 	public function setProfiler(IDibiProfiler $profiler = NULL)
 	{
 		$this->profiler = $profiler;
+		return $this;
 	}
 
 
diff --git a/dibi/libs/DibiProfiler.php b/dibi/libs/DibiProfiler.php
index 477bbf7..dfba97d 100644
--- a/dibi/libs/DibiProfiler.php
+++ b/dibi/libs/DibiProfiler.php
@@ -60,22 +60,24 @@ class DibiProfiler extends DibiObject implements IDibiProfiler
 
 	/**
 	 * @param  string  filename
-	 * @return void
+	 * @return DibiProfiler  provides a fluent interface
 	 */
 	public function setFile($file)
 	{
 		$this->file = $file;
+		return $this;
 	}
 
 
 
 	/**
 	 * @param  int
-	 * @return void
+	 * @return DibiProfiler  provides a fluent interface
 	 */
 	public function setFilter($filter)
 	{
 		$this->filter = (int) $filter;
+		return $this;
 	}
 
 
diff --git a/dibi/libs/DibiResult.php b/dibi/libs/DibiResult.php
index f309b0d..27ecdea 100644
--- a/dibi/libs/DibiResult.php
+++ b/dibi/libs/DibiResult.php
@@ -485,11 +485,12 @@ class DibiResult extends DibiObject implements IDataSource
 	 * @param  string  column
 	 * @param  string  type (use constant Dibi::*)
 	 * @param  string  optional format
-	 * @return void
+	 * @return DibiResult  provides a fluent interface
 	 */
 	final public function setType($col, $type, $format = NULL)
 	{
 		$this->xlat[$col] = array('type' => $type, 'format' => $format);
+		return $this;
 	}
 
 
@@ -510,12 +511,13 @@ class DibiResult extends DibiObject implements IDataSource
 	/**
 	 * Define multiple columns types.
 	 * @param  array
-	 * @return void
+	 * @return DibiResult  provides a fluent interface
 	 * @internal
 	 */
 	final public function setTypes(array $types)
 	{
 		$this->xlat = $types;
+		return $this;
 	}