diff --git a/po/POTFILES.in b/po/POTFILES.in
index 9dbbe32f3..73df2c98b 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -14,6 +14,7 @@ lib/getopt.c
 lib/mkdir-p.c
 lib/obstack.c
 lib/openat-die.c
+lib/propername.h
 lib/quotearg.c
 lib/randread.c
 lib/regcomp.c