diff --git a/po/POTFILES.in b/po/POTFILES.in
index 0bf2c25..892fb55 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -19,6 +19,7 @@ src/pv/format/name.c
 src/pv/format/previousline.c
 src/pv/format/progressbar.c
 src/pv/format/rate.c
+src/pv/format/ratio.c
 src/pv/format/sgr.c
 src/pv/format/timer.c
 src/pv/loop.c