diff --git a/components/script/dom/location.rs b/components/script/dom/location.rs
index d6df671f451b..98f60a29b937 100644
--- a/components/script/dom/location.rs
+++ b/components/script/dom/location.rs
@@ -140,7 +140,10 @@ impl LocationMethods for Location {
     // https://html.spec.whatwg.org/multipage/#dom-location-host
     fn SetHost(&self, value: USVString) -> ErrorResult {
         self.check_same_origin_domain()?;
-        self.set_url_component(value, UrlHelper::SetHost);
+        // If copyURL's cannot-be-a-base-URL flag is set, terminate these steps.
+        if !self.get_url().cannot_be_a_base() {
+            self.set_url_component(value, UrlHelper::SetHost);
+        }
         Ok(())
     }
 
@@ -159,7 +162,10 @@ impl LocationMethods for Location {
     // https://html.spec.whatwg.org/multipage/#dom-location-hostname
     fn SetHostname(&self, value: USVString) -> ErrorResult {
         self.check_same_origin_domain()?;
-        self.set_url_component(value, UrlHelper::SetHostname);
+        // If copyURL's cannot-be-a-base-URL flag is set, terminate these steps.
+        if !self.get_url().cannot_be_a_base() {
+            self.set_url_component(value, UrlHelper::SetHostname);
+        }
         Ok(())
     }
 
@@ -191,7 +197,10 @@ impl LocationMethods for Location {
     // https://html.spec.whatwg.org/multipage/#dom-location-pathname
     fn SetPathname(&self, value: USVString) -> ErrorResult {
         self.check_same_origin_domain()?;
-        self.set_url_component(value, UrlHelper::SetPathname);
+        // If copyURL's cannot-be-a-base-URL flag is set, terminate these steps.
+        if !self.get_url().cannot_be_a_base() {
+            self.set_url_component(value, UrlHelper::SetPathname);
+        }
         Ok(())
     }
 
@@ -204,7 +213,12 @@ impl LocationMethods for Location {
     // https://html.spec.whatwg.org/multipage/#dom-location-port
     fn SetPort(&self, value: USVString) -> ErrorResult {
         self.check_same_origin_domain()?;
-        self.set_url_component(value, UrlHelper::SetPort);
+        let url = self.get_url();
+        // If copyURL cannot have a username/password/port, then return.
+        // https://url.spec.whatwg.org/#cannot-have-a-username-password-port
+        if url.has_host() && !url.cannot_be_a_base() && url.scheme() != "file" {
+            self.set_url_component(value, UrlHelper::SetPort);
+        }
         Ok(())
     }
 
@@ -217,7 +231,11 @@ impl LocationMethods for Location {
     // https://html.spec.whatwg.org/multipage/#dom-location-protocol
     fn SetProtocol(&self, value: USVString) -> ErrorResult {
         self.check_same_origin_domain()?;
-        self.set_url_component(value, UrlHelper::SetProtocol);
+        // If copyURL's scheme is not an HTTP(S) scheme, then terminate these steps.
+        let scheme = value.split(':').next().unwrap();
+        if scheme.eq_ignore_ascii_case("http") || scheme.eq_ignore_ascii_case("https") {
+            self.set_url_component(value, UrlHelper::SetProtocol);
+        }
         Ok(())
     }
 
diff --git a/components/url/lib.rs b/components/url/lib.rs
index bb7c1fa4e356..a5b8b15279b3 100644
--- a/components/url/lib.rs
+++ b/components/url/lib.rs
@@ -93,6 +93,10 @@ impl ServoUrl {
         self.0.scheme()
     }
 
+    pub fn has_host(&self) -> bool {
+        self.0.has_host()
+    }
+
     pub fn is_secure_scheme(&self) -> bool {
         let scheme = self.scheme();
         scheme == "https" || scheme == "wss"
diff --git a/tests/wpt/metadata/html/browsers/history/the-location-interface/location-protocol-setter-non-broken-weird.html.ini b/tests/wpt/metadata/html/browsers/history/the-location-interface/location-protocol-setter-non-broken-weird.html.ini
deleted file mode 100644
index a30c51097ab4..000000000000
--- a/tests/wpt/metadata/html/browsers/history/the-location-interface/location-protocol-setter-non-broken-weird.html.ini
+++ /dev/null
@@ -1,16 +0,0 @@
-[location-protocol-setter-non-broken-weird.html]
-  [Set location.protocol to data]
-    expected: FAIL
-
-  [Set location.protocol to ftp]
-    expected: FAIL
-
-  [Set location.protocol to gopher]
-    expected: FAIL
-
-  [Set location.protocol to x]
-    expected: FAIL
-
-  [Set location.protocol to http+x]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/html/browsers/history/the-location-interface/location-protocol-setter-non-broken.html.ini b/tests/wpt/metadata/html/browsers/history/the-location-interface/location-protocol-setter-non-broken.html.ini
index 3a39a215f254..fc20af26ee0e 100644
--- a/tests/wpt/metadata/html/browsers/history/the-location-interface/location-protocol-setter-non-broken.html.ini
+++ b/tests/wpt/metadata/html/browsers/history/the-location-interface/location-protocol-setter-non-broken.html.ini
@@ -17,19 +17,3 @@
 
   [Set data URL frame location.protocol to http+x]
     expected: FAIL
-
-  [Set HTTP URL frame location.protocol to gopher]
-    expected: FAIL
-
-  [Set HTTP URL frame location.protocol to http+x]
-    expected: FAIL
-
-  [Set HTTP URL frame location.protocol to ftp]
-    expected: FAIL
-
-  [Set HTTP URL frame location.protocol to data]
-    expected: FAIL
-
-  [Set HTTP URL frame location.protocol to x]
-    expected: FAIL
-