diff --git a/core/Object.php b/core/Object.php
index e914bed0d..de263ccb2 100755
--- a/core/Object.php
+++ b/core/Object.php
@@ -439,7 +439,7 @@ abstract class Object {
 		
 		// load statics now for DataObject classes
 		if(ClassInfo::is_subclass_of($class, 'DataObject')) {
-			DataObjectDecorator::load_extra_statics($class, $extensionClass);
+			DataObjectDecorator::load_extra_statics($class, $extension);
 		}
 	}
 
@@ -456,10 +456,7 @@ abstract class Object {
 		if(is_subclass_of($class, 'DataObject')) {
 			$extensions = Object::uninherited_static($class, 'extensions');
 			if($extensions) foreach($extensions as $extension) {
-				if(preg_match('/^([^(]*)/', $extension, $matches)) {
-					$extensionClass = $matches[1];
-					DataObjectDecorator::load_extra_statics($class, $extensionClass);
-				}
+				DataObjectDecorator::load_extra_statics($class, $extension);
 			}
 		}
 	}
diff --git a/core/model/DataObject.php b/core/model/DataObject.php
index 3547896ba..c0a0f5796 100755
--- a/core/model/DataObject.php
+++ b/core/model/DataObject.php
@@ -462,7 +462,6 @@ class DataObject extends ViewableData implements DataObjectInterface, i18nEntity
 				$class = get_class($instance);
 				user_error("DataObject::defineMethods(): Please ensure {$class}::__construct() calls parent::__construct()", E_USER_ERROR);
 			}
-			DataObjectDecorator::load_extra_statics($this->class, $instance->class);
 		}
 
 		// Set up accessors for joined items
diff --git a/core/model/DataObjectDecorator.php b/core/model/DataObjectDecorator.php
index 058418b1b..fde4deba3 100755
--- a/core/model/DataObjectDecorator.php
+++ b/core/model/DataObjectDecorator.php
@@ -48,8 +48,15 @@ abstract class DataObjectDecorator extends Extension {
 		if(!empty(self::$extra_statics_loaded[$class][$extension])) return;
 		self::$extra_statics_loaded[$class][$extension] = true;
 		
+		if(preg_match('/^([^(]*)/', $extension, $matches)) {
+			$extensionClass = $matches[1];
+		} else {
+			user_error("Bad extenion '$extension' - can't find classname", E_USER_WARNING);
+			return;
+		}
+		
 		// @deprecated 2.4 - use extraStatics() now, not extraDBFields()
-		if(method_exists($extension, 'extraDBFields')) {
+		if(method_exists($extensionClass, 'extraDBFields')) {
 			user_error('DataObjectDecorator::extraDBFields() is deprecated. Please use extraStatics() instead.', E_USER_NOTICE); 
 			$extraStaticsMethod = 'extraDBFields';
 		} else {
@@ -57,9 +64,9 @@ abstract class DataObjectDecorator extends Extension {
 		}
 		
 		// If the extension has been manually applied to a subclass, we should ignore that.
-		if(Object::has_extension(get_parent_class($class), $extension)) return;
+		if(Object::has_extension(get_parent_class($class), $extensionClass)) return;
 		
-		$statics = call_user_func(array($extension, $extraStaticsMethod), $class);
+		$statics = call_user_func(array($extensionClass, $extraStaticsMethod), $class, $extension);
 		
 		if($statics) {
 			foreach($statics as $name => $newVal) {