diff --git a/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp b/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
index 0c9f1c8dae..4567edee64 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
+++ b/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
@@ -2794,8 +2794,9 @@ CSSPixelRect StyleComputer::viewport_rect() const
     return {};
 }
 
-void StyleComputer::did_load_font([[maybe_unused]] FlyString const& family_name)
+void StyleComputer::did_load_font(FlyString const& family_name)
 {
+    m_font_cache.did_load_font({}, family_name);
     document().invalidate_style();
 }
 
diff --git a/Userland/Libraries/LibWeb/FontCache.cpp b/Userland/Libraries/LibWeb/FontCache.cpp
index 3d293cc718..76b0c9a3c3 100644
--- a/Userland/Libraries/LibWeb/FontCache.cpp
+++ b/Userland/Libraries/LibWeb/FontCache.cpp
@@ -39,4 +39,11 @@ void FontCache::set(FontSelector const& font_selector, NonnullRefPtr<Gfx::Font c
     m_fonts.set(font_selector, move(font));
 }
 
+void FontCache::did_load_font(Badge<CSS::StyleComputer>, FlyString const& family_name)
+{
+    m_fonts.remove_all_matching([&family_name](auto& key, auto&) -> bool {
+        return key.family == family_name;
+    });
+}
+
 }
diff --git a/Userland/Libraries/LibWeb/FontCache.h b/Userland/Libraries/LibWeb/FontCache.h
index abe4e0f0f5..fedb577193 100644
--- a/Userland/Libraries/LibWeb/FontCache.h
+++ b/Userland/Libraries/LibWeb/FontCache.h
@@ -35,6 +35,8 @@ public:
 
     NonnullRefPtr<Gfx::Font const> scaled_font(Gfx::Font const&, float scale_factor);
 
+    void did_load_font(Badge<CSS::StyleComputer>, FlyString const& family_name);
+
 private:
     mutable HashMap<FontSelector, NonnullRefPtr<Gfx::Font const>> m_fonts;
 };