diff --git a/mozilla/modules/plugin/src/MANIFEST b/mozilla/modules/plugin/src/MANIFEST
index 1c3d36794cd..8a49ccc9f9d 100644
--- a/mozilla/modules/plugin/src/MANIFEST
+++ b/mozilla/modules/plugin/src/MANIFEST
@@ -20,6 +20,5 @@
 #
 
 nppg.h
-npupp.h
 npglue.h
 nppriv.h