diff --git a/bundles/org.eclipse.rap.addons.dropdown/js/rwt/dropdown/DropDown.js b/bundles/org.eclipse.rap.addons.dropdown/js/rwt/dropdown/DropDown.js
index fc6a0fe..8faa12e 100644
--- a/bundles/org.eclipse.rap.addons.dropdown/js/rwt/dropdown/DropDown.js
+++ b/bundles/org.eclipse.rap.addons.dropdown/js/rwt/dropdown/DropDown.js
@@ -27,13 +27,11 @@
     return stylemap.shadow || null;
   };
 
-
-  // Values identical to SWT
   var eventTypes = {
-    Selection : 13,
-    DefaultSelection : 14,
-    Show : 22,
-    Hide : 23
+    Selection : SWT.Selection,
+    DefaultSelection : SWT.DefaultSelection,
+    Show : SWT.Show,
+    Hide : SWT.Hide
   };
 
   var forwardedKeys = {
diff --git a/tests/org.eclipse.rap.addons.dropdown.test/js/rwt/dropdown/DropDown_Test.js b/tests/org.eclipse.rap.addons.dropdown.test/js/rwt/dropdown/DropDown_Test.js
index a750e0d..bc9741d 100644
--- a/tests/org.eclipse.rap.addons.dropdown.test/js/rwt/dropdown/DropDown_Test.js
+++ b/tests/org.eclipse.rap.addons.dropdown.test/js/rwt/dropdown/DropDown_Test.js
@@ -657,7 +657,7 @@
       assertIdentical( dropdown, event.widget );
       assertIdentical( "b", event.text );
       assertIdentical( 1, event.index );
-      assertIdentical( 13, event.type );
+      assertIdentical( SWT.Selection, event.type );
     },
 
     testSelectionEventFields_Unescaped : function() {
@@ -777,7 +777,7 @@
       assertIdentical( dropdown, event.widget );
       assertIdentical( "b", event.text );
       assertIdentical( 1, event.index );
-      assertIdentical( 14, event.type );
+      assertIdentical( SWT.DefaultSelection, event.type );
     },
 
     testGetSelectionIndex_InitialValueIsMinusOne : function() {