diff --git a/src/components/DataEntry/DataEntryHeader/tests/DataEntryHeader.test.tsx b/src/components/DataEntry/DataEntryHeader/tests/DataEntryHeader.test.tsx
index 4bdad4845a..e9b9d8ef41 100644
--- a/src/components/DataEntry/DataEntryHeader/tests/DataEntryHeader.test.tsx
+++ b/src/components/DataEntry/DataEntryHeader/tests/DataEntryHeader.test.tsx
@@ -4,11 +4,11 @@ import configureMockStore from "redux-mock-store";
 
 import "tests/mockReactI18next";
 
+import { SemanticDomainFull } from "api";
 import DataEntryHeader, {
   getQuestions,
 } from "components/DataEntry/DataEntryHeader/DataEntryHeader";
 import { newSemanticDomain } from "types/semanticDomain";
-import { SemanticDomainFull } from "api";
 
 const mockStore = configureMockStore()();
 const mockCallback = jest.fn();
diff --git a/src/components/TreeView/TreeSearch.tsx b/src/components/TreeView/TreeSearch.tsx
index d3ee192493..d4740e452c 100644
--- a/src/components/TreeView/TreeSearch.tsx
+++ b/src/components/TreeView/TreeSearch.tsx
@@ -1,12 +1,13 @@
 import { Grid, TextField } from "@material-ui/core";
+import React, { ReactElement, useState } from "react";
+import { useTranslation } from "react-i18next";
+import { Key } from "ts-key-enum";
+
 import { SemanticDomainTreeNode } from "api";
 import {
   getSemanticDomainTreeNode,
   getSemanticDomainTreeNodeByName,
 } from "backend";
-import React, { ReactElement, useState } from "react";
-import { useTranslation } from "react-i18next";
-import { Key } from "ts-key-enum";
 
 export interface TreeSearchProps {
   currentDomain: SemanticDomainTreeNode;
@@ -99,7 +100,7 @@ export function useTreeSearch(props: TreeSearchProps): TreeSearchState {
       // Search for domain
       if (!isNaN(parseInt(input))) {
         // make a blocking call to the backend API for the domain id instead of using the map
-        let domain = await getSemanticDomainTreeNode(input, "en");
+        const domain = await getSemanticDomainTreeNode(input, "en");
         if (domain) {
           animateSuccessfulSearch(domain, event);
           // Return to indicate success and skip setting error state.
diff --git a/src/components/TreeView/TreeViewActions.ts b/src/components/TreeView/TreeViewActions.ts
index 4acb3e77b6..5f054fc00c 100644
--- a/src/components/TreeView/TreeViewActions.ts
+++ b/src/components/TreeView/TreeViewActions.ts
@@ -1,20 +1,9 @@
+import { defaultState } from "./TreeViewReducer";
 import { SemanticDomain, SemanticDomainTreeNode } from "api/models";
 import { getSemanticDomainTreeNode } from "backend";
+import { StoreState } from "types";
 import { StoreStateDispatch } from "types/Redux/actions";
-
-export enum TreeActionType {
-  CLOSE_TREE = "CLOSE_TREE",
-  OPEN_TREE = "OPEN_TREE",
-  SET_DOMAIN_LANGUAGE = "SET_DOMAIN_LANGUAGE",
-  TRAVERSE_TREE = "TRAVERSE_TREE",
-  SET_CURRENT_DOMAIN = "SET_CURRENT_DOMAIN",
-}
-
-export interface TreeViewAction {
-  type: TreeActionType;
-  domain?: SemanticDomain;
-  language?: string;
-}
+import { TreeActionType, TreeViewAction } from "./TreeViewReduxTypes";
 
 export function closeTreeAction(): TreeViewAction {
   return { type: TreeActionType.CLOSE_TREE };
@@ -46,10 +35,22 @@ export function setCurrentDomain(
   return { type: TreeActionType.SET_CURRENT_DOMAIN, domain };
 }
 
-export function updateTreeLanguage(language: string, headString = "") {
+export function updateTreeLanguage(language: string) {
   return async (dispatch: StoreStateDispatch) => {
     if (language) {
       dispatch(setDomainLanguageAction(language));
     }
   };
 }
+
+export function initTreeDomain(language: string) {
+  return async (dispatch: StoreStateDispatch, getState: () => StoreState) => {
+    const currentDomain = getState().treeViewState.currentDomain;
+    if (currentDomain === defaultState.currentDomain) {
+      if (!currentDomain.lang) {
+        currentDomain.lang = language ?? "en";
+      }
+      dispatch(traverseTreeAction(currentDomain));
+    }
+  };
+}
diff --git a/src/components/TreeView/TreeViewComponent.tsx b/src/components/TreeView/TreeViewComponent.tsx
index 6f3b2bdc32..b5a2ece655 100644
--- a/src/components/TreeView/TreeViewComponent.tsx
+++ b/src/components/TreeView/TreeViewComponent.tsx
@@ -8,6 +8,7 @@ import { SemanticDomain, SemanticDomainTreeNode, WritingSystem } from "api";
 import TreeDepiction from "components/TreeView/TreeDepiction";
 import TreeSearch from "components/TreeView/TreeSearch";
 import {
+  initTreeDomain,
   traverseTreeAction,
   updateTreeLanguage,
 } from "components/TreeView/TreeViewActions";
@@ -36,6 +37,7 @@ export function TreeView(props: TreeViewProps): ReactElement {
   );
   const [visible, setVisible] = useState(true);
   const dispatch = useDispatch();
+  const { i18n } = props;
 
   useEffect(() => {
     /* Select the language used for the semantic domains.
@@ -43,18 +45,13 @@ export function TreeView(props: TreeViewProps): ReactElement {
      * Secondary: What is the current browser/ui language? */
     const newLang =
       getSemDomWritingSystem(semDomWritingSystem)?.bcp47 ??
-      props.i18n.resolvedLanguage;
+      i18n.resolvedLanguage;
     if (newLang && newLang !== semDomLanguage) {
-      const headString = props.t("addWords.domain") as string;
-      dispatch(updateTreeLanguage(newLang, headString));
+      dispatch(updateTreeLanguage(newLang));
       // Don't update when props updates, except props.i18n.resolvedLanguage
     } // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [
-    semDomLanguage,
-    semDomWritingSystem,
-    dispatch,
-    props.i18n.resolvedLanguage,
-  ]);
+    dispatch(initTreeDomain(newLang));
+  }, [semDomLanguage, semDomWritingSystem, dispatch, i18n.resolvedLanguage]);
 
   function animateHandler(domain: SemanticDomain): Promise<void> {
     if (visible) {
diff --git a/src/components/TreeView/TreeViewReducer.ts b/src/components/TreeView/TreeViewReducer.ts
index 7552d00667..d384d01c65 100644
--- a/src/components/TreeView/TreeViewReducer.ts
+++ b/src/components/TreeView/TreeViewReducer.ts
@@ -2,7 +2,7 @@ import { SemanticDomainTreeNode } from "api/models";
 import {
   TreeViewAction,
   TreeActionType,
-} from "components/TreeView/TreeViewActions";
+} from "components/TreeView/TreeViewReduxTypes";
 import i18n from "i18n";
 import { StoreAction, StoreActionTypes } from "rootActions";
 
@@ -23,6 +23,7 @@ export const defaultState: TreeViewState = {
     previous: undefined,
     next: undefined,
     parent: undefined,
+    children: undefined,
   },
 };
 
@@ -45,11 +46,6 @@ export const treeViewReducer = (
         ...state,
         language: action.language,
       };
-    case TreeActionType.TRAVERSE_TREE:
-      if (!action.domain) {
-        throw new Error("Cannot traverse tree without specifying domain.");
-      }
-      return { ...state };
     case TreeActionType.SET_CURRENT_DOMAIN:
       if (!action.domain) {
         throw new Error("Cannot set the current domain to undefined.");
diff --git a/src/components/TreeView/TreeViewReduxTypes.tsx b/src/components/TreeView/TreeViewReduxTypes.tsx
new file mode 100644
index 0000000000..2d7d744b0b
--- /dev/null
+++ b/src/components/TreeView/TreeViewReduxTypes.tsx
@@ -0,0 +1,14 @@
+import { SemanticDomain } from "api/models";
+
+export enum TreeActionType {
+  CLOSE_TREE = "CLOSE_TREE",
+  OPEN_TREE = "OPEN_TREE",
+  SET_DOMAIN_LANGUAGE = "SET_DOMAIN_LANGUAGE",
+  SET_CURRENT_DOMAIN = "SET_CURRENT_DOMAIN",
+}
+
+export interface TreeViewAction {
+  type: TreeActionType;
+  domain?: SemanticDomain;
+  language?: string;
+}
diff --git a/src/components/TreeView/tests/TreeSearch.test.tsx b/src/components/TreeView/tests/TreeSearch.test.tsx
index 296b3d6525..38d463f78a 100644
--- a/src/components/TreeView/tests/TreeSearch.test.tsx
+++ b/src/components/TreeView/tests/TreeSearch.test.tsx
@@ -1,12 +1,12 @@
-import { render, RenderResult, screen } from "@testing-library/react";
+import { render, screen } from "@testing-library/react";
 import { act, renderHook } from "@testing-library/react-hooks";
 import userEvent from "@testing-library/user-event";
 import React from "react";
 import { Key } from "ts-key-enum";
 
 import "tests/mockReactI18next";
+import { SemanticDomainTreeNode } from "api";
 import * as backend from "backend";
-
 import TreeSearch, {
   insertDecimalPoints,
   testId,
@@ -14,7 +14,6 @@ import TreeSearch, {
   useTreeSearch,
 } from "components/TreeView/TreeSearch";
 import domMap, { mapIds } from "components/TreeView/tests/MockSemanticDomain";
-import { SemanticDomainTreeNode } from "api";
 import { newSemanticDomainTreeNode } from "types/semanticDomain";
 
 // Handles
diff --git a/src/components/TreeView/tests/TreeViewActions.test.tsx b/src/components/TreeView/tests/TreeViewActions.test.tsx
index 7cd2fd2b33..2aead87c83 100644
--- a/src/components/TreeView/tests/TreeViewActions.test.tsx
+++ b/src/components/TreeView/tests/TreeViewActions.test.tsx
@@ -1,13 +1,14 @@
+import configureMockStore from "redux-mock-store";
+import thunk from "redux-thunk";
+
+import * as backend from "backend";
 import {
   setDomainLanguageAction,
   traverseTreeAction,
-  TreeActionType,
 } from "components/TreeView/TreeViewActions";
 import { defaultState } from "components/TreeView/TreeViewReducer";
 import { newSemanticDomainTreeNode } from "types/semanticDomain";
-import * as backend from "backend";
-import configureMockStore from "redux-mock-store";
-import thunk from "redux-thunk";
+import { TreeActionType } from "../TreeViewReduxTypes";
 
 jest.mock("backend", () => ({
   getSemanticDomainTreeNode: (id: string, lang: string) =>
diff --git a/src/components/TreeView/tests/TreeViewComponent.test.tsx b/src/components/TreeView/tests/TreeViewComponent.test.tsx
index ec2c8b2eca..4ec3815fcd 100644
--- a/src/components/TreeView/tests/TreeViewComponent.test.tsx
+++ b/src/components/TreeView/tests/TreeViewComponent.test.tsx
@@ -6,6 +6,7 @@ import renderer, {
 import configureMockStore from "redux-mock-store";
 
 import "tests/mockReactI18next";
+import thunk from "redux-thunk";
 
 import TreeDepiction from "components/TreeView/TreeDepiction";
 import TreeView from "components/TreeView/TreeViewComponent";
@@ -26,12 +27,10 @@ jest.mock("@material-ui/core", () => {
     Zoom: realMaterialUi.Container,
   };
 });
-
-const mockStore = configureMockStore()({
+const mockStore = configureMockStore([thunk])({
   treeViewState: {
     ...treeViewState,
     currentDomain: mockMap[mockDomain.id],
-    domainMap: mockMap,
   },
   currentProjectState: {
     project: { semDomWritingSystem: newWritingSystem() },
diff --git a/src/components/TreeView/tests/TreeViewReducer.test.tsx b/src/components/TreeView/tests/TreeViewReducer.test.tsx
index 26052b523d..33e4e0cdb1 100644
--- a/src/components/TreeView/tests/TreeViewReducer.test.tsx
+++ b/src/components/TreeView/tests/TreeViewReducer.test.tsx
@@ -1,14 +1,14 @@
 import {
   TreeViewAction,
   TreeActionType,
-} from "components/TreeView/TreeViewActions";
+} from "components/TreeView/TreeViewReduxTypes";
 import {
   treeViewReducer,
   defaultState,
   TreeViewState,
 } from "components/TreeView/TreeViewReducer";
 import { StoreAction, StoreActionTypes } from "rootActions";
-import { TreeSemanticDomain } from "types/semanticDomain";
+import { newSemanticDomain } from "types/semanticDomain";
 
 describe("Test the TreeViewReducer", () => {
   it("Returns defaultState when passed undefined", () => {
@@ -28,13 +28,13 @@ describe("Test the TreeViewReducer", () => {
       treeViewReducer(
         {
           ...defaultState,
-          currentDomain: defaultState.currentDomain.subdomains[0],
+          currentDomain: defaultState.currentDomain,
         },
         { type: "Nothing" } as any as TreeViewAction
       )
     ).toEqual({
       ...defaultState,
-      currentDomain: defaultState.currentDomain.subdomains[0],
+      currentDomain: defaultState.currentDomain,
     });
   });
 
@@ -57,10 +57,10 @@ describe("Test the TreeViewReducer", () => {
   });
 
   it("Returns state with a new SemanticDomain when requested to change this value", () => {
-    const payload = new TreeSemanticDomain("testId", "testName");
+    const payload = newSemanticDomain("testId", "testName");
     expect(
       treeViewReducer(defaultState, {
-        type: TreeActionType.TRAVERSE_TREE,
+        type: TreeActionType.SET_CURRENT_DOMAIN,
         domain: payload,
       })
     ).toEqual({ ...defaultState, currentDomain: payload });