diff --git a/app/models/relationship.rb b/app/models/relationship.rb
index 9babad135e68..6ba8ec6d8685 100644
--- a/app/models/relationship.rb
+++ b/app/models/relationship.rb
@@ -197,7 +197,8 @@ def self.stringify_resource_pairs(resource_pairs, options = {})
   def grandchild_conditions
     t = self.class.arel_table
     t.grouping(t[:ancestry].matches("#{child_ancestry}/%", nil, true).and(
-                 t[:ancestry].does_not_match("#{child_ancestry}/%", nil, true)))
+                 t[:ancestry].does_not_match("#{child_ancestry}/%/%", nil, true))
+              )
   end
 
   def child_and_grandchild_conditions
diff --git a/spec/models/mixins/relationship_mixin_spec.rb b/spec/models/mixins/relationship_mixin_spec.rb
index 41dff5cab217..f12bc60400c8 100644
--- a/spec/models/mixins/relationship_mixin_spec.rb
+++ b/spec/models/mixins/relationship_mixin_spec.rb
@@ -813,7 +813,7 @@
     end
   end
 
-  describe "#parent_rel_ids" do
+  describe "#parent_rels" do
     it "works with relationships" do
       pars = vms[8].with_relationship_type(test_rel_type, &:parent_rels)
       pars_vms = pars.map(&:resource)
@@ -839,6 +839,24 @@
     end
   end
 
+  describe "#grandchild_rels" do
+    it "works with relationships" do
+      vms[0].with_relationship_type(test_rel_type) do
+        rels = vms[0].grandchild_rels
+        expect(rels.map(&:resource)).to match_array([vms[3], vms[4], vms[5], vms[6], vms[7]])
+      end
+    end
+  end
+
+  describe "#child_and_grandchild_rels" do
+    it "works with relationships" do
+      vms[0].with_relationship_type(test_rel_type) do
+        rels = vms[0].child_and_grandchild_rels
+        expect(rels.map(&:resource)).to match_array([vms[1], vms[2], vms[3], vms[4], vms[5], vms[6], vms[7]])
+      end
+    end
+  end
+
   protected
 
   def build_relationship_tree(tree, rel_type = test_rel_type, base_factory = :vm_vmware)