diff --git a/extensions/cloud-init/config/99-armbian-no-zram-swap.cfg b/extensions/cloud-init/config/99-armbian-no-zram-swap.cfg
new file mode 100644
index 000000000000..dc478529e5fc
--- /dev/null
+++ b/extensions/cloud-init/config/99-armbian-no-zram-swap.cfg
@@ -0,0 +1,16 @@
+# Do not let cloud-init persist the (dynamic) zram swap into /etc/fstab.
+#
+# Armbian sets up zram swap at boot via armbian-zram-config.service. cloud-init's
+# `mounts` module otherwise sees that active swap and writes a matching
+# "/dev/zram0 none swap ... comment=cloudconfig" line to /etc/fstab. On the next
+# boot systemd turns that line into a dev-zram0.swap unit and blocks ~90s on the
+# device timeout waiting for /dev/zram0 — which only appears once
+# armbian-zram-config runs — before swap.target fails/recovers. Result: a very
+# slow boot every time.
+#
+# Setting the `swap` mount to null removes cloud-init's default swap mount, so it
+# leaves zram/swap management to Armbian while keeping the rest of the `mounts`
+# module intact. (cc_mounts sanitizes the config before de-duplicating, so this
+# suppresses the auto-added default swap entry too.)
+mounts:
+  - [ swap, null ]