diff --git a/layout/html/forms/public/MANIFEST b/layout/html/forms/public/MANIFEST
index 951bdee3b3e9..cbc538d84c4a 100644
--- a/layout/html/forms/public/MANIFEST
+++ b/layout/html/forms/public/MANIFEST
@@ -4,3 +4,4 @@
 
 nsIComboboxControlFrame.h
 nsIListControlFrame.h
+nsIFormControlFrame.h