diff --git a/src/components/post_status_form/post_status_form.js b/src/components/post_status_form/post_status_form.js
index cb0536d2..25eac1d6 100644
--- a/src/components/post_status_form/post_status_form.js
+++ b/src/components/post_status_form/post_status_form.js
@@ -436,7 +436,9 @@ const PostStatusForm = {
 
       const postHandler = this.postHandler ? this.postHandler : statusPoster.postStatus
 
-      let bef = document.getElementsByClassName("Timeline")[0].scrollHeight
+      let bef = null
+      if (document.getElementsByClassName("Timeline") > 0)
+        bef = document.getElementsByClassName("Timeline")[0].scrollHeight
 
       postHandler(postingOptions).then((data) => {
         if (!data.error) {
@@ -448,7 +450,7 @@ const PostStatusForm = {
         this.posting = false
 
         // same as timeline.js
-        if (this.$store.getters.mergedConfig.fixupScrollOnPostWStreaming && window.scrollY > 0) {
+        if (this.$store.getters.mergedConfig.fixupScrollOnPostWStreaming && window.scrollY > 0 && (document.getElementsByClassName("Timeline") > 0)) {
           let after = document.getElementsByClassName("Timeline")[0].scrollHeight
           let diff = bef - after
           if (diff < 0) diff = diff * -1