diff --git a/plugins/clock/clock-digital.h b/plugins/clock/clock-digital.h
index f8d4771..26f52a4 100644
--- a/plugins/clock/clock-digital.h
+++ b/plugins/clock/clock-digital.h
@@ -21,7 +21,8 @@
 
 G_BEGIN_DECLS
 
-#define DEFAULT_DIGITAL_FORMAT "%R"
+/* TRANSLATORS: adjust this accordingly for your locale format */
+#define DEFAULT_DIGITAL_FORMAT NC_("Time", "%R")
 
 typedef struct _XfceClockDigitalClass XfceClockDigitalClass;
 typedef struct _XfceClockDigital      XfceClockDigital;
diff --git a/plugins/clock/clock.c b/plugins/clock/clock.c
index e07c17b..bc80acd 100644
--- a/plugins/clock/clock.c
+++ b/plugins/clock/clock.c
@@ -43,7 +43,8 @@
 #include "clock-lcd.h"
 #include "clock-dialog_ui.h"
 
-#define DEFAULT_TOOLTIP_FORMAT "%A %d %B %Y"
+/* TRANSLATORS: adjust this accordingly for your locale format */
+#define DEFAULT_TOOLTIP_FORMAT NC_("Date", "%A %d %B %Y")
 
 /* Please adjust the following command to match your distribution */
 /* e.g. "time-admin" */
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 4f16130..e1daa8e 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -48,6 +48,7 @@ plugins/clock/clock-analog.c
 plugins/clock/clock-binary.c
 plugins/clock/clock-dialog.glade
 plugins/clock/clock-digital.c
+plugins/clock/clock-digital.h
 plugins/clock/clock-fuzzy.c
 plugins/clock/clock-lcd.c
 plugins/clock/clock.desktop.in.in