diff --git a/gluon/gluon-announce/files/lib/gluon/announce/statistics.d/overlay_usage b/gluon/gluon-announce/files/lib/gluon/announce/statistics.d/overlay_usage
deleted file mode 100644
index f6cded2..0000000
--- a/gluon/gluon-announce/files/lib/gluon/announce/statistics.d/overlay_usage
+++ /dev/null
@@ -1,5 +0,0 @@
-local fs = require "nixio.fs"
-local opkg = require "luci.model.ipkg"
-
-local st = fs.statvfs(opkg.overlay_root())
-return 1 - st.bfree / st.blocks
diff --git a/gluon/gluon-announce/files/lib/gluon/announce/statistics.d/rootfs_usage b/gluon/gluon-announce/files/lib/gluon/announce/statistics.d/rootfs_usage
new file mode 100644
index 0000000..8426e9e
--- /dev/null
+++ b/gluon/gluon-announce/files/lib/gluon/announce/statistics.d/rootfs_usage
@@ -0,0 +1,4 @@
+local fs = require "nixio.fs"
+
+local st = fs.statvfs("/")
+return 1 - st.bfree / st.blocks