1 files changed, 9 insertions, 9 deletions

diff --git a/fluid/nodes/Tree.h b/fluid/nodes/Tree.h
index f494af651..f1a338630 100644
--- a/fluid/nodes/Tree.h
+++ b/fluid/nodes/Tree.h
@@ -31,7 +31,7 @@ class Tree {
 
   // A class that can iterate over the entire scene graph.
   class Iterator {
-    Node *type_ = nullptr;
+    Node *type_ = 0;
     bool only_selected_ = false;
   public:
     explicit Iterator(Node *t, bool only_selected);
@@ -47,12 +47,12 @@ class Tree {
   public:
     Container(Tree &tree, bool only_selected) : tree_(tree), only_selected_(only_selected) { }
     Iterator begin() { return Iterator(tree_.first, only_selected_); }
-    Iterator end() { return Iterator(nullptr, only_selected_); }
+    Iterator end() { return Iterator(0, only_selected_); }
   };
 
   // A class that iterate over the scene graph, but returns only nodes of type widget.
   class WIterator {
-    Node *type_ = nullptr;
+    Node *type_ = 0;
     bool only_selected_ = false;
   public:
     explicit WIterator(Node *t, bool only_selected);
@@ -68,7 +68,7 @@ class Tree {
   public:
     WContainer(Tree &tree, bool only_selected) : tree_(tree), only_selected_(only_selected) { }
     WIterator begin() { return WIterator(tree_.first, only_selected_); }
-    WIterator end() { return WIterator(nullptr, only_selected_); }
+    WIterator end() { return WIterator(0, only_selected_); }
   };
 
   /// Link Tree class to the project.
@@ -76,10 +76,10 @@ class Tree {
 
 public:
 
-  Node *first = nullptr;
-  Node *last = nullptr;
-  Node *current = nullptr;  // most recently picked object
-  Node *current_dnd = nullptr;
+  Node *first = 0;
+  Node *last = 0;
+  Node *current = 0;  // most recently picked object
+  Node *current_dnd = 0;
   /// If this is greater zero, widgets will be allowed to lay out their children.
   int allow_layout = 0;
 
@@ -87,7 +87,7 @@ public:
 
   Tree(Project &proj);
 
-  bool empty() { return first == nullptr; }
+  bool empty() { return first == 0; }
 
   // Iterators: `for (auto &n: tree.all_nodes()) { n.print(); }
   Container all_nodes() { return Container(*this, false); }