diff --git a/Tests/LibWeb/Text/expected/css/box-shadow-resolves-length-functions.txt b/Tests/LibWeb/Text/expected/css/box-shadow-resolves-length-functions.txt
index 284f5c23fb..c6350fa96a 100644
--- a/Tests/LibWeb/Text/expected/css/box-shadow-resolves-length-functions.txt
+++ b/Tests/LibWeb/Text/expected/css/box-shadow-resolves-length-functions.txt
@@ -1 +1 @@
-0 calc(5px - 10px) 0 calc(2px + 3px) => #000000ff 0px calc(5px + (0 - 10px)) 0px calc(2px + 3px)
+0 calc(5px - 10px) 0 calc(2px + 3px) => #000000ff 0px -5px 0px 5px
diff --git a/Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp b/Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp
index ed8f47e272..3f99653111 100644
--- a/Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp
+++ b/Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp
@@ -467,7 +467,10 @@ Optional<StyleProperty> ResolvedCSSStyleDeclaration::property(PropertyID propert
     if (!m_element->is_connected())
         return {};
 
-    if (property_affects_layout(property_id)) {
+    // FIXME: Be smarter about updating layout if there's no layout node.
+    //        We may legitimately have no layout node if we're not visible, but this protects against situations
+    //        where we're requesting the computed style before layout has happened.
+    if (!m_element->layout_node() || property_affects_layout(property_id)) {
         const_cast<DOM::Document&>(m_element->document()).update_layout();
     } else {
         // FIXME: If we had a way to update style for a single element, this would be a good place to use it.