diff --git a/eeshow/fmt-pango.c b/eeshow/fmt-pango.c
index bdf1088..d877b61 100644
--- a/eeshow/fmt-pango.c
+++ b/eeshow/fmt-pango.c
@@ -102,6 +102,12 @@ unsigned vsfmt_pango(char *buf, const char *fmt, va_list ap)
 				memcpy(res, tmp, len);
 			res += len;
 			break;
+		case 'u':
+			len = asprintf(&tmp, tmp_fmt, va_arg(ap, unsigned));
+			if (buf)
+				memcpy(res, tmp, len);
+			res += len;
+			break;
 		case '%':
 			if (buf)
 				*res = '%';
diff --git a/eeshow/fmt-pango.h b/eeshow/fmt-pango.h
index 5cf2416..43628e4 100644
--- a/eeshow/fmt-pango.h
+++ b/eeshow/fmt-pango.h
@@ -19,6 +19,7 @@
 
 unsigned vsfmt_pango(char *buf, const char *fmt, va_list ap);
 char *vfmt_pango(const char *fmt, va_list ap);
-char *fmt_pango(const char *fmt, ...);
+char *fmt_pango(const char *fmt, ...)
+    __attribute__((format(printf, 1, 2)));
 
 #endif /* !FMT_PANGO_H */