diff --git a/blocks/test/fixtures/core__more.json b/blocks/test/fixtures/core__more.json
index cf637af1ba0d96..b325915f93e9ff 100644
--- a/blocks/test/fixtures/core__more.json
+++ b/blocks/test/fixtures/core__more.json
@@ -2,6 +2,7 @@
     {
         "uid": "_uid_0",
         "name": "core/more",
+        "isValid": true,
         "attributes": {
             "customText": null,
             "noTeaser": false
diff --git a/blocks/test/fixtures/core__more.serialized.html b/blocks/test/fixtures/core__more.serialized.html
index 238c8ec67bddbd..61f3b597d7a7f5 100644
--- a/blocks/test/fixtures/core__more.serialized.html
+++ b/blocks/test/fixtures/core__more.serialized.html
@@ -1 +1 @@
-<!--more-->
\ No newline at end of file
+<!--more-->
diff --git a/blocks/test/fixtures/core__more__custom-text-teaser.json b/blocks/test/fixtures/core__more__custom-text-teaser.json
index 571cd079a33f6b..bc62be6e9843b2 100644
--- a/blocks/test/fixtures/core__more__custom-text-teaser.json
+++ b/blocks/test/fixtures/core__more__custom-text-teaser.json
@@ -2,6 +2,7 @@
     {
         "uid": "_uid_0",
         "name": "core/more",
+        "isValid": true,
         "attributes": {
             "customText": "Continue Reading",
             "noTeaser": true
diff --git a/blocks/test/fixtures/core__more__custom-text-teaser.serialized.html b/blocks/test/fixtures/core__more__custom-text-teaser.serialized.html
index d5339e0664ea7b..024a275187161b 100644
--- a/blocks/test/fixtures/core__more__custom-text-teaser.serialized.html
+++ b/blocks/test/fixtures/core__more__custom-text-teaser.serialized.html
@@ -1,2 +1,2 @@
 <!--more-->
-<!--noteaser-->
\ No newline at end of file
+<!--noteaser-->