diff --git a/fn.py b/fn.py
index 30dc2b6..7cd0b6c 100755
--- a/fn.py
+++ b/fn.py
@@ -307,6 +307,18 @@ def connect_to_file_output(node_list, file_out=None, base_path='', excludes=None
 
 # region Utilities
 
+def get_collection_children_recursive(col, cols=None) -> list:
+    '''return a list of all the child collections
+    and their subcollections in the passed collection'''
+
+    cols = cols if cols is not None else []
+    for sub in col.children:
+        if sub not in cols:
+            cols.append(sub)
+        if len(sub.children):
+            cols = get_collection_children_recursive(sub, cols)
+    return cols
+
 def set_properties_editor_tab(tab, skip_if_exists=True):
     '''Take a tab name and apply it to properties editor
     tab: identifier of the tab, possible name in:
diff --git a/operators/visibility_conflicts.py b/operators/visibility_conflicts.py
index a4b24d4..ede174d 100644
--- a/operators/visibility_conflicts.py
+++ b/operators/visibility_conflicts.py
@@ -1,5 +1,4 @@
 import bpy
-
 from bpy.types import Operator
 from bpy.props import (BoolProperty,
                         EnumProperty,
@@ -7,6 +6,8 @@ from bpy.props import (BoolProperty,
                         CollectionProperty,
                         StringProperty)
 
+from .. import fn
+
 
 # region Object visibility
 
@@ -333,25 +334,14 @@ class RT_OT_list_viewport_render_visibility(Operator):
 
 # region Collection Visibility
 
-def get_collection_children_recursive(col, cols=None) -> list:
-    '''return a list of all the child collections
-    and their subcollections in the passed collection'''
-
-    cols = cols or [] 
-    for sub in col.children:
-        if sub not in cols:
-            cols.append(sub)
-        if len(sub.children):
-            cols = get_collection_children_recursive(sub, cols)
-    return cols
 
 def get_viewlayer_collections_with_visiblity_conflict(context):
-        '''return viewlayer collections with visibility conflicts between hide in viewlayer, hide viewport and hide render'''
-        vcols = get_collection_children_recursive(context.view_layer.layer_collection)
-        vcols = list(set(vcols)) # ensure no duplicates
+    '''return viewlayer collections with visibility conflicts between hide in viewlayer, hide viewport and hide render'''
+    vcols = fn.get_collection_children_recursive(context.view_layer.layer_collection)
+    vcols = list(set(vcols)) # ensure no duplicates
 
-        ## Store collection with conflicts
-        return [vc for vc in vcols if not (vc.hide_viewport == vc.collection.hide_viewport == vc.collection.hide_render)]
+    ## Store collection with conflicts
+    return [vc for vc in vcols if not (vc.hide_viewport == vc.collection.hide_viewport == vc.collection.hide_render)]
 
 class RT_OT_list_collection_visibility_conflicts(Operator):
     bl_idname = "rt.list_collection_visibility_conflicts"
@@ -374,11 +364,6 @@ class RT_OT_list_collection_visibility_conflicts(Operator):
         ## get all viewlayer collections
 
         self.conflict_collections = get_viewlayer_collections_with_visiblity_conflict(context)
-        vcols = get_collection_children_recursive(context.view_layer.layer_collection)
-        vcols = list(set(vcols)) # ensure no duplicates
-
-        ## Store collection with conflicts
-        self.conflict_collections = [vc for vc in vcols if not (vc.hide_viewport == vc.collection.hide_viewport == vc.collection.hide_render)]
         self.included_collection = [vc for vc in self.conflict_collections if not vc.exclude]
         self.excluded_collection = [vc for vc in self.conflict_collections if vc.exclude]