diff --git a/Libraries/LibWeb/Animations/KeyframeEffect.cpp b/Libraries/LibWeb/Animations/KeyframeEffect.cpp
index d04114a59b2..3b918045949 100644
--- a/Libraries/LibWeb/Animations/KeyframeEffect.cpp
+++ b/Libraries/LibWeb/Animations/KeyframeEffect.cpp
@@ -918,7 +918,7 @@ static CSS::RequiredInvalidationAfterStyleChange compute_required_invalidation(H
 void KeyframeEffect::update_computed_properties()
 {
     auto target = this->target();
-    if (!target)
+    if (!target || !target->is_connected())
         return;
 
     GC::Ptr<CSS::ComputedProperties> style = {};