diff --git a/dom/base/DocumentOrShadowRoot.cpp b/dom/base/DocumentOrShadowRoot.cpp
index 876d265cc1..f420ff6a28 100644
--- a/dom/base/DocumentOrShadowRoot.cpp
+++ b/dom/base/DocumentOrShadowRoot.cpp
@@ -277,7 +277,9 @@ DocumentOrShadowRoot::ElementsFromPointHelper(float aX, float aY,
       node = node->GetParent();
       if (node) {
         ShadowRoot* shadow = ShadowRoot::FromNode(node);
-        node = shadow->Host();
+        if (shadow) {
+          node = shadow->Host();
+        }
       }
     }