1 files changed, 5 insertions, 4 deletions
diff --git a/source/blender/blenkernel/intern/collection.c b/source/blender/blenkernel/intern/collection.c
index fdffe7dca57..24266dc6bea 100644
--- a/source/blender/blenkernel/intern/collection.c
+++ b/source/blender/blenkernel/intern/collection.c
@@ -79,7 +79,8 @@ static bool collection_object_remove(Main *bmain,
 static CollectionChild *collection_find_child(Collection *parent, Collection *collection);
 static CollectionParent *collection_find_parent(Collection *child, Collection *collection);
 
-static bool collection_find_child_recursive(Collection *parent, Collection *collection);
+static bool collection_find_child_recursive(const Collection *parent,
+                                            const Collection *collection);
 
 /** \} */
 
@@ -1521,9 +1522,9 @@ static CollectionChild *collection_find_child(Collection *parent, Collection *co
   return BLI_findptr(&parent->children, collection, offsetof(CollectionChild, collection));
 }
 
-static bool collection_find_child_recursive(Collection *parent, Collection *collection)
+static bool collection_find_child_recursive(const Collection *parent, const Collection *collection)
 {
-  LISTBASE_FOREACH (CollectionChild *, child, &parent->children) {
+  LISTBASE_FOREACH (const CollectionChild *, child, &parent->children) {
     if (child->collection == collection) {
       return true;
     }
@@ -1536,7 +1537,7 @@ static bool collection_find_child_recursive(Collection *parent, Collection *coll
   return false;
 }
 
-bool BKE_collection_has_collection(Collection *parent, Collection *collection)
+bool BKE_collection_has_collection(const Collection *parent, const Collection *collection)
 {
   return collection_find_child_recursive(parent, collection);
 }