diff --git a/Libraries/LibWeb/Forward.h b/Libraries/LibWeb/Forward.h
index f84af285ec..2ebcac7f2e 100644
--- a/Libraries/LibWeb/Forward.h
+++ b/Libraries/LibWeb/Forward.h
@@ -38,6 +38,7 @@ class Frame;
 class HTMLBodyElement;
 class HTMLCanvasElement;
 class HTMLElement;
+class HTMLFormElement;
 class HTMLHeadElement;
 class HTMLHtmlElement;
 class HTMLImageElement;