diff --git a/po/POTFILES.in b/po/POTFILES.in
index c4eeed111..fb893350e 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -12,6 +12,7 @@ src/core/display.c
 src/core/errors.c
 src/core/keybindings.c
 src/core/main.c
+src/core/monitor.c
 src/core/mutter.c
 src/core/prefs.c
 src/core/screen.c