diff --git a/src/page/FollowPage.js b/src/page/FollowPage.js
index 494a98e..342c632 100644
--- a/src/page/FollowPage.js
+++ b/src/page/FollowPage.js
@@ -56,7 +56,9 @@ export default class FollowPage extends Component {
         this.bottomTabEventListener = Navigation.events().registerBottomTabSelectedListener(
             ({ selectedTabIndex, unselectedTabIndex }) => {
                 if(selectedTabIndex == unselectedTabIndex && selectedTabIndex == 1) {
-                    this.diaryList.scrollToTop();
+                    if(this.diaryList) {
+                        this.diaryList.scrollToTop();
+                    }
                 }
             }
         );
diff --git a/src/page/HomePage.js b/src/page/HomePage.js
index 404b684..d9f2f96 100644
--- a/src/page/HomePage.js
+++ b/src/page/HomePage.js
@@ -54,7 +54,9 @@ export default class HomePage extends Component {
         this.bottomTabEventListener = Navigation.events().registerBottomTabSelectedListener(
             ({ selectedTabIndex, unselectedTabIndex }) => {
                 if(selectedTabIndex == unselectedTabIndex && selectedTabIndex == 0) {
-                    this.diaryList.scrollToTop();
+                    if(this.diaryList) {
+                        this.diaryList.scrollToTop();
+                    }
                 }
             }
         );