diff --git a/src/plugins/coreplugin/coreplugin.cpp b/src/plugins/coreplugin/coreplugin.cpp
index 7f2bd66a9b653e42f7673f0c4a371f1af873478c..8e858100b94767c02ae13cbf04f39d709c8e7fa6 100644
--- a/src/plugins/coreplugin/coreplugin.cpp
+++ b/src/plugins/coreplugin/coreplugin.cpp
@@ -47,7 +47,7 @@ using namespace Core;
 using namespace Core::Internal;
 
 CorePlugin::CorePlugin() :
-    m_mainWindow(new MainWindow), m_editMode(0)
+    m_mainWindow(new MainWindow), m_editMode(0), m_designMode(0)
 {
 }