diff --git a/dom/html/nsGenericHTMLElement.cpp b/dom/html/nsGenericHTMLElement.cpp
index 589b620c942..6f795fb5376 100644
--- a/dom/html/nsGenericHTMLElement.cpp
+++ b/dom/html/nsGenericHTMLElement.cpp
@@ -3334,8 +3334,7 @@ nsGenericHTMLElement::GetInnerText(mozilla::dom::DOMString& aValue,
 {
   if (!GetPrimaryFrame(Flush_Layout)) {
     nsIPresShell* presShell = nsComputedDOMStyle::GetPresShellForContent(this);
-    if (!presShell || !IsInComposedDoc() ||
-        IsOrHasAncestorWithDisplayNone(this, presShell)) {
+    if (!presShell || IsOrHasAncestorWithDisplayNone(this, presShell)) {
       GetTextContentInternal(aValue, aError);
       return;
     }
diff --git a/testing/web-platform/tests/innerText/getter-tests.js b/testing/web-platform/tests/innerText/getter-tests.js
index 26cd3753325..cc74890882e 100644
--- a/testing/web-platform/tests/innerText/getter-tests.js
+++ b/testing/web-platform/tests/innerText/getter-tests.js
@@ -73,6 +73,9 @@ testText("<div style='display:none'>abc  def", "abc  def", "No whitespace compre
 testText("<div style='display:none'> abc def ", " abc def ", "No removal of leading/trailing whitespace in display:none container");
 testText("<div>123<span style='display:none'>abc", "123", "display:none child not rendered");
 testText("<div style='display:none'><span id='target'>abc", "abc", "display:none container with non-display-none target child");
+testTextInSVG("<div id='target'>abc", "", "non-display-none child of svg");
+testTextInSVG("<div style='display:none' id='target'>abc", "abc", "display:none child of svg");
+testTextInSVG("<div style='display:none'><div id='target'>abc", "abc", "child of display:none child of svg");
 
 /**** display:contents ****/
 
diff --git a/testing/web-platform/tests/innerText/getter.html b/testing/web-platform/tests/innerText/getter.html
index 7b69f663a26..b5fb4883e83 100644
--- a/testing/web-platform/tests/innerText/getter.html
+++ b/testing/web-platform/tests/innerText/getter.html
@@ -13,13 +13,25 @@
 .first-letter-float::first-letter { float:left; }
 </style>
 <div id="container"></div>
+<svg id="svgContainer"></svg>
 <script>
 function testText(html, expectedPlain, msg) {
+  textTextInContainer(container, html, expectedPlain, msg);
+}
+function testTextInSVG(html, expectedPlain, msg) {
+  textTextInContainer(svgContainer, html, expectedPlain, msg);
+}
+function textTextInContainer(cont, html, expectedPlain, msg) {
   test(function() {
     container.innerHTML = html;
+    if (cont != container) {
+      while (container.firstChild) {
+        cont.appendChild(container.firstChild);
+      }
+    }
     var e = document.getElementById('target');
     if (!e) {
-      e = container.firstChild;
+      e = cont.firstChild;
     }
     var pokes = document.getElementsByClassName('poke');
     for (var i = 0; i < pokes.length; ++i) {
@@ -40,6 +52,7 @@ function testText(html, expectedPlain, msg) {
       e = e.nextSibling;
     }
     assert_equals(e.innerText, expectedPlain);
+    cont.textContent = '';
   }, msg);
 }
 </script>