Index: branches/5.3.x/core/kernel/utility/unit_config.php
===================================================================
diff -u -N -r15945 -r16156
--- branches/5.3.x/core/kernel/utility/unit_config.php	(.../unit_config.php)	(revision 15945)
+++ branches/5.3.x/core/kernel/utility/unit_config.php	(.../unit_config.php)	(revision 16156)
@@ -1086,11 +1086,8 @@
 		$register_classes = $this->_getClasses();
 
 		foreach ($register_classes as $class_info) {
-			$this->Application->registerClass(
-				$class_info['class'],
-				$this->getBasePath() . DIRECTORY_SEPARATOR . $class_info['file'],
-				$class_info['pseudo']
-			);
+			// Thanks to static class map there is no need to specify file during class registration.
+			$this->Application->registerClass($class_info['class'], '', $class_info['pseudo']);
 
 			if ( isset($class_info['build_event']) && $class_info['build_event'] && $class_info['build_event'] != 'OnBuild' ) {
 				$this->Application->delayUnitProcessing('registerBuildEvent', Array ($class_info['pseudo'], $class_info['build_event']));