diff --git a/src/plugins/qt4projectmanager/qt4nodes.cpp b/src/plugins/qt4projectmanager/qt4nodes.cpp
index a47f43001efbd7bed506cedb77c1d7a61ed46ade..82f768148c09bd94e6bf31a8d5e0f417db7e5785 100644
--- a/src/plugins/qt4projectmanager/qt4nodes.cpp
+++ b/src/plugins/qt4projectmanager/qt4nodes.cpp
@@ -126,6 +126,11 @@ namespace Internal {
         QString fullName;
         QIcon icon;
 
+        InternalNode()
+        {
+            type = ProjectExplorer::UnknownFileType;
+        }
+
         ~InternalNode()
         {
             qDeleteAll(subnodes);