diff --git a/components/script/dom/htmltablecellelement.rs b/components/script/dom/htmltablecellelement.rs
index ba6dc39d09d..4dbfc97e588 100644
--- a/components/script/dom/htmltablecellelement.rs
+++ b/components/script/dom/htmltablecellelement.rs
@@ -210,7 +210,7 @@ impl VirtualMethods for HTMLTableCellElement {
                     // > the range [0, 65534], and its default value is 1.
                     // Note that rowspan = 0 is not supported in quirks mode.
                     let document = self.upcast::<Node>().owner_doc();
-                    if document.quirks_mode() != QuirksMode::NoQuirks {
+                    if document.quirks_mode() == QuirksMode::Quirks {
                         *value = (*value).clamp(1, 65534);
                     } else {
                         *value = (*value).clamp(0, 65534);
diff --git a/tests/wpt/meta/MANIFEST.json b/tests/wpt/meta/MANIFEST.json
index 9398a251cec..39a9e8468c0 100644
--- a/tests/wpt/meta/MANIFEST.json
+++ b/tests/wpt/meta/MANIFEST.json
@@ -611776,7 +611776,7 @@
        ]
       ],
       "table-limited-quirks.html": [
-       "4deb7a93898aea084b0de1ffcee942ca889e8c9d",
+       "9f44d285510c22449263bc99a6afa1203cae6896",
        [
         null,
         {}
@@ -611790,7 +611790,7 @@
        ]
       ],
       "table-quirks.html": [
-       "35c091095500e29112029d23a55a020a763631ef",
+       "dcf6c084eda46d58b065f54cc05dde59682abbee",
        [
         null,
         {}
diff --git a/tests/wpt/tests/css/css-tables/tentative/table-limited-quirks.html b/tests/wpt/tests/css/css-tables/tentative/table-limited-quirks.html
index 4deb7a93898..9f44d285510 100644
--- a/tests/wpt/tests/css/css-tables/tentative/table-limited-quirks.html
+++ b/tests/wpt/tests/css/css-tables/tentative/table-limited-quirks.html
@@ -65,6 +65,14 @@
   <td data-expected-width=184><img style="width:50px;height:20px"><img style="width:50px;height:20px"><img style="width:50px;height:20px"><img style="width:50px;height:20px"><img style="width:50px;height:20px"></td>
 </table>
 
+<p><a href="https://html.spec.whatwg.org/multipage/tables.html#algorithm-for-processing-rows">The "let <i>cell grows downward</i> be false" quirk</a> does NOT apply to limited-quirks mode</p>
+<table>
+  <tr style="height: 100px">
+    <td id="rowspan" rowspan="0" data-expected-height=208>208 height</td>
+  </tr>
+  <tr style="height: 100px"></tr>
+</table>
+
 <script>
   let pngSrc="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAMgAAACWAQMAAAChElVaAAAABGdBTUEAALGPC/xhBQAAACBjSFJNAAB6JgAAgIQAAPoAAACA6AAAdTAAAOpgAAA6mAAAF3CculE8AAAABlBMVEUAgAD///8UPy9PAAAAAWJLR0QB/wIt3gAAAAd0SU1FB+MBDwkdA1Cz/EMAAAAbSURBVEjH7cGBAAAAAMOg+VPf4ARVAQAAAM8ADzwAAeM8wQsAAAAldEVYdGRhdGU6Y3JlYXRlADIwMTktMDEtMTVUMTc6Mjk6MDMtMDg6MDCYDy9IAAAAJXRFWHRkYXRlOm1vZGlmeQAyMDE5LTAxLTE1VDE3OjI5OjAzLTA4OjAw6VKX9AAAAABJRU5ErkJggg=="
 ;
@@ -74,5 +82,8 @@
   test(_ => {
     assert_equals(window.getComputedStyle(document.querySelector("#italic")).fontStyle, "italic");
   }, "decoration propagates into table");
+  test(_ => {
+    assert_equals(document.querySelector("#rowspan").rowSpan, 0);
+  }, "rowspan can be zero");
   document.fonts.ready.then(() => checkLayout("table"));
 </script>
diff --git a/tests/wpt/tests/css/css-tables/tentative/table-quirks.html b/tests/wpt/tests/css/css-tables/tentative/table-quirks.html
index 35c09109550..dcf6c084eda 100644
--- a/tests/wpt/tests/css/css-tables/tentative/table-quirks.html
+++ b/tests/wpt/tests/css/css-tables/tentative/table-quirks.html
@@ -63,6 +63,15 @@
   <td data-expected-width=290><img style="width:50px;height:20px"><img style="width:50px;height:20px"><img style="width:50px;height:20px"><img style="width:50px;height:20px"><img style="width:50px;height:20px"></td>
 </table>
 
+<p><a href="https://html.spec.whatwg.org/multipage/tables.html#algorithm-for-processing-rows">The "let <i>cell grows downward</i> be false" quirk</a></p>
+<p class="error">Chrome LayoutNG and Safari ignore the quirk, FF does not.</p>
+<table>
+  <tr style="height: 100px">
+    <td id="rowspan" rowspan="0" data-expected-height=100>100 height</td>
+  </tr>
+  <tr style="height: 100px"></tr>
+</table>
+
 <script>
   let pngSrc="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAMgAAACWAQMAAAChElVaAAAABGdBTUEAALGPC/xhBQAAACBjSFJNAAB6JgAAgIQAAPoAAACA6AAAdTAAAOpgAAA6mAAAF3CculE8AAAABlBMVEUAgAD///8UPy9PAAAAAWJLR0QB/wIt3gAAAAd0SU1FB+MBDwkdA1Cz/EMAAAAbSURBVEjH7cGBAAAAAMOg+VPf4ARVAQAAAM8ADzwAAeM8wQsAAAAldEVYdGRhdGU6Y3JlYXRlADIwMTktMDEtMTVUMTc6Mjk6MDMtMDg6MDCYDy9IAAAAJXRFWHRkYXRlOm1vZGlmeQAyMDE5LTAxLTE1VDE3OjI5OjAzLTA4OjAw6VKX9AAAAABJRU5ErkJggg=="
 ;
@@ -72,5 +81,8 @@
   test(_ => {
     assert_equals(window.getComputedStyle(document.querySelector("#notitalic")).fontStyle, "normal");
   }, "decoration does not propagate into table");
+  test(_ => {
+    assert_equals(document.querySelector("#rowspan").rowSpan, 1);
+  }, "rowspan can't be zero");
   document.fonts.ready.then(() => checkLayout("table"));
 </script>