diff --git a/merge/src/odered_merge.rs b/merge/src/odered_merge.rs
index e6181ce..e8338af 100644
--- a/merge/src/odered_merge.rs
+++ b/merge/src/odered_merge.rs
@@ -115,6 +115,11 @@ pub fn ordered_merge<'a>(
 
                         cur_right = children_right_it.next();
                     }
+                    (None, Some(_), Some(_), None, None) => {
+                        result_children.push(cur_right.unwrap().to_owned());
+
+                        cur_right = children_right_it.next();
+                    }
                     (None, None, Some(matching_base_left), Some(_), Some(_)) => {
                         if !matching_base_left.is_perfect_match {
                             result_children.push(CSTNode::Conflict {
@@ -138,6 +143,11 @@ pub fn ordered_merge<'a>(
                         cur_left = children_left_it.next();
                         cur_right = children_right_it.next();
                     }
+                    (None, None, None, Some(_), Some(_)) => {
+                        result_children.push(cur_left.unwrap().to_owned());
+
+                        cur_left = children_left_it.next();
+                    }
                     (None, None, None, None, Some(matching_base_right)) => {
                         result_children.push(cur_left.unwrap().to_owned());
 
@@ -838,77 +848,77 @@ mod tests {
         )
     }
 
-    // #[test]
-    // fn it_merges_when_a_parent_adds_a_node() {
-    //     let base = CSTNode::NonTerminal {
-    //         kind: "kind".into(),
-    //         children: vec![
-    //             CSTNode::Terminal {
-    //                 kind: "kind_a".into(),
-    //                 value: "value_a".into(),
-    //             },
-    //             CSTNode::Terminal {
-    //                 kind: "kind_c".into(),
-    //                 value: "value_c".into(),
-    //             },
-    //         ],
-    //     };
-
-    //     let unchanged_parent = CSTNode::NonTerminal {
-    //         kind: "kind".into(),
-    //         children: vec![
-    //             CSTNode::Terminal {
-    //                 kind: "kind_a".into(),
-    //                 value: "value_a".into(),
-    //             },
-    //             CSTNode::Terminal {
-    //                 kind: "kind_c".into(),
-    //                 value: "value_c".into(),
-    //             },
-    //         ],
-    //     };
-
-    //     let changed_parent = CSTNode::NonTerminal {
-    //         kind: "kind".into(),
-    //         children: vec![
-    //             CSTNode::Terminal {
-    //                 kind: "kind_a".into(),
-    //                 value: "value_a".into(),
-    //             },
-    //             CSTNode::Terminal {
-    //                 kind: "kind_b".into(),
-    //                 value: "value_b".into(),
-    //             },
-    //             CSTNode::Terminal {
-    //                 kind: "kind_c".into(),
-    //                 value: "value_c".into(),
-    //             },
-    //         ],
-    //     };
-
-    //     let expected_merge = CSTNode::NonTerminal {
-    //         kind: "kind".into(),
-    //         children: vec![
-    //             CSTNode::Terminal {
-    //                 kind: "kind_a".into(),
-    //                 value: "value_a".into(),
-    //             },
-    //             CSTNode::Terminal {
-    //                 kind: "kind_b".into(),
-    //                 value: "value_b".into(),
-    //             },
-    //             CSTNode::Terminal {
-    //                 kind: "kind_c".into(),
-    //                 value: "value_c".into(),
-    //             },
-    //         ],
-    //     };
-
-    //     assert_merge_is_correct_and_idempotent_with_respect_to_parent_side(
-    //         base,
-    //         unchanged_parent,
-    //         changed_parent,
-    //         expected_merge,
-    //     )
-    // }
+    #[test]
+    fn it_merges_when_a_parent_adds_a_node() {
+        let base = CSTNode::NonTerminal {
+            kind: "kind".into(),
+            children: vec![
+                CSTNode::Terminal {
+                    kind: "kind_a".into(),
+                    value: "value_a".into(),
+                },
+                CSTNode::Terminal {
+                    kind: "kind_c".into(),
+                    value: "value_c".into(),
+                },
+            ],
+        };
+
+        let unchanged_parent = CSTNode::NonTerminal {
+            kind: "kind".into(),
+            children: vec![
+                CSTNode::Terminal {
+                    kind: "kind_a".into(),
+                    value: "value_a".into(),
+                },
+                CSTNode::Terminal {
+                    kind: "kind_c".into(),
+                    value: "value_c".into(),
+                },
+            ],
+        };
+
+        let changed_parent = CSTNode::NonTerminal {
+            kind: "kind".into(),
+            children: vec![
+                CSTNode::Terminal {
+                    kind: "kind_a".into(),
+                    value: "value_a".into(),
+                },
+                CSTNode::Terminal {
+                    kind: "kind_b".into(),
+                    value: "value_b".into(),
+                },
+                CSTNode::Terminal {
+                    kind: "kind_c".into(),
+                    value: "value_c".into(),
+                },
+            ],
+        };
+
+        let expected_merge = CSTNode::NonTerminal {
+            kind: "kind".into(),
+            children: vec![
+                CSTNode::Terminal {
+                    kind: "kind_a".into(),
+                    value: "value_a".into(),
+                },
+                CSTNode::Terminal {
+                    kind: "kind_b".into(),
+                    value: "value_b".into(),
+                },
+                CSTNode::Terminal {
+                    kind: "kind_c".into(),
+                    value: "value_c".into(),
+                },
+            ],
+        };
+
+        assert_merge_is_correct_and_idempotent_with_respect_to_parent_side(
+            base,
+            unchanged_parent,
+            changed_parent,
+            expected_merge,
+        )
+    }
 }