diff --git a/po/POTFILES.in b/po/POTFILES.in
index efc46bb7ba59d0089d801c8a1391d71e157a15c5..a115b7d867debadcce7967148b518a31ef5fdcc9 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -994,7 +994,9 @@ modules/misc/xml/libxml.c
 modules/mux/asf.c
 modules/mux/avi.c
 modules/mux/dummy.c
-modules/mux/mp4.c
+modules/mux/mp4/libmp4mux.c
+modules/mux/mp4/libmp4mux.h
+modules/mux/mp4/mp4.c
 modules/mux/mpeg/bits.h
 modules/mux/mpeg/csa.c
 modules/mux/mpeg/csa.h