diff --git a/app/models/labeling/skos/base.rb b/app/models/labeling/skos/base.rb
index 2d3cbc12..b67c1cb3 100644
--- a/app/models/labeling/skos/base.rb
+++ b/app/models/labeling/skos/base.rb
@@ -63,7 +63,7 @@ def self.single_query(params = {})
         scope = scope.where("#{Collection::Member::Base.table_name}.collection_id" => collection.id)
         scope = scope.references(:collection_members)
       else
-        raise "Collection with Origin #{params[:collection_origin]} not found!"
+        Rails.logger.warn "Collection with Origin #{params[:collection_origin]} not found!"
       end
     end
     scope = scope.includes(:owner)
diff --git a/app/models/note/base.rb b/app/models/note/base.rb
index fc43992a..fed6cbc4 100644
--- a/app/models/note/base.rb
+++ b/app/models/note/base.rb
@@ -168,7 +168,7 @@ def self.single_query(params = {})
         scope = scope.where("#{Collection::Member::Base.table_name}.collection_id" => collection.id)
         scope = scope.references(:collection_members)
       else
-        raise "Collection with Origin #{params[:collection_origin]} not found!"
+        Rails.logger.warn "Collection with Origin #{params[:collection_origin]} not found!"
       end
     end