diff --git a/components/script/dom/request.rs b/components/script/dom/request.rs
index b3bb2f1afe1..60935093647 100644
--- a/components/script/dom/request.rs
+++ b/components/script/dom/request.rs
@@ -106,7 +106,7 @@ impl Request {
                 // Step 5.5
                 fallback_mode = Some(NetTraitsRequestMode::CorsMode);
                 // Step 5.6
-                fallback_credentials = Some(NetTraitsRequestCredentials::Omit);
+                fallback_credentials = Some(NetTraitsRequestCredentials::CredentialsSameOrigin);
             }
             // Step 6
             RequestInfo::Request(ref input_request) => {
diff --git a/tests/wpt/metadata/fetch/api/request/request-init-003.sub.html.ini b/tests/wpt/metadata/fetch/api/request/request-init-003.sub.html.ini
deleted file mode 100644
index bb984c0b6d5..00000000000
--- a/tests/wpt/metadata/fetch/api/request/request-init-003.sub.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[request-init-003.sub.html]
-  [Check request values when initialized from url string]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/fetch/api/request/request-structure.html.ini b/tests/wpt/metadata/fetch/api/request/request-structure.html.ini
index f40ee09b801..d90b69a1a99 100644
--- a/tests/wpt/metadata/fetch/api/request/request-structure.html.ini
+++ b/tests/wpt/metadata/fetch/api/request/request-structure.html.ini
@@ -1,7 +1,4 @@
 [request-structure.html]
-  [Check credentials attribute]
-    expected: FAIL
-
   [Check isReloadNavigation attribute]
     expected: FAIL