1 files changed, 3 insertions, 1 deletions
diff --git a/source/blender/editors/space_outliner/tree/tree_iterator.hh b/source/blender/editors/space_outliner/tree/tree_iterator.hh
index de5bcd2c462..0c94c2f95cf 100644
--- a/source/blender/editors/space_outliner/tree/tree_iterator.hh
+++ b/source/blender/editors/space_outliner/tree/tree_iterator.hh
@@ -10,9 +10,11 @@
 
 struct ListBase;
 struct SpaceOutliner;
-struct TreeElement;
 
 namespace blender::ed::outliner {
+
+struct TreeElement;
+
 namespace tree_iterator {
 
 using VisitorFn = FunctionRef<void(TreeElement *)>;