diff --git a/Userland/Libraries/LibWeb/Animations/TimingFunction.cpp b/Userland/Libraries/LibWeb/Animations/TimingFunction.cpp
index 92e1b0b14dc..8b423efd824 100644
--- a/Userland/Libraries/LibWeb/Animations/TimingFunction.cpp
+++ b/Userland/Libraries/LibWeb/Animations/TimingFunction.cpp
@@ -95,9 +95,9 @@ double CubicBezierTimingFunction::operator()(double input_progress, bool) const
 
     if (nearby_index == m_cached_x_samples.size() || nearby_index + 1 == m_cached_x_samples.size()) {
         // Produce more samples until we have enough.
-        auto last_t = m_cached_x_samples.is_empty() ? 0 : m_cached_x_samples.last().t;
-        auto last_x = m_cached_x_samples.is_empty() ? 0 : m_cached_x_samples.last().x;
-        while (last_x <= x) {
+        auto last_t = m_cached_x_samples.last().t;
+        auto last_x = m_cached_x_samples.last().x;
+        while (last_x <= x && last_t < 1.0) {
             last_t += 1. / 60.;
             auto solution = solve(last_t);
             m_cached_x_samples.append(solution);