diff --git a/files/usr/local/bin/apl-aggregator b/files/usr/local/bin/apl-aggregator
index 2e42331..4838f5c 100755
--- a/files/usr/local/bin/apl-aggregator
+++ b/files/usr/local/bin/apl-aggregator
@@ -1052,15 +1052,17 @@ _fr24_acquire_binary() {
 	rm -rf "$tmp"
 }
 
-# _fr24_write_ini <ini> <key>: configure fr24feed as a BEAST-TCP consumer of
-# the local decoder with the operator's sharing key (MLAT off, per the
-# adapter's FR24-MLAT-default-off contract).
+# _fr24_write_ini <ini> <key> <decoder-addr>: configure fr24feed as a BEAST-TCP
+# consumer of the local decoder at <decoder-addr> with the operator's sharing
+# key (MLAT off, per the adapter's FR24-MLAT-default-off contract). The address
+# is the same AGG_DECODER_ADDR the reachability probe checks, so fr24feed feeds
+# from exactly what was verified rather than a separately hardcoded endpoint.
 _fr24_write_ini() {
-	local ini="$1" key="$2" tmp
+	local ini="$1" key="$2" addr="$3" tmp
 	tmp="$(mktemp "${ini}.XXXXXX")" || return 1
 	if ! cat >"$tmp" <<EOF
 receiver="beast-tcp"
-host="127.0.0.1:30005"
+host="$addr"
 fr24key="$key"
 bs="no"
 raw="no"
@@ -1175,7 +1177,7 @@ _enable_fr24() {
 	_worker_progress configuring
 	install -d -m 0750 "$(dirname "$ini")" 2>/dev/null || true
 	if [[ -n "$key" ]]; then
-		_fr24_write_ini "$ini" "$key" || { _emit_error state_error "failed to write fr24feed.ini"; exit 3; }
+		_fr24_write_ini "$ini" "$key" "$AGG_DECODER_ADDR" || { _emit_error state_error "failed to write fr24feed.ini"; exit 3; }
 	else
 		if ! _fr24_signup "$bin" "$ini" "$email" "$lat" "$lon" "$alt"; then
 			_emit_error signup_failed "fr24 signup did not return a sharing key"; exit 2
@@ -1185,7 +1187,7 @@ _enable_fr24() {
 		# The wizard writes its own receiver config (dvbt/auto); overwrite it so the
 		# signup and keyed paths produce identical BEAST-TCP-to-local config. Only
 		# the minted key is kept from the wizard's run.
-		_fr24_write_ini "$ini" "$key" || { _emit_error state_error "failed to write fr24feed.ini"; exit 3; }
+		_fr24_write_ini "$ini" "$key" "$AGG_DECODER_ADDR" || { _emit_error state_error "failed to write fr24feed.ini"; exit 3; }
 	fi
 	_fr24_finalize_perms "$ini"
 
diff --git a/test/bats/test_aggregator_enable.bats b/test/bats/test_aggregator_enable.bats
index 47bffba..c46d194 100644
--- a/test/bats/test_aggregator_enable.bats
+++ b/test/bats/test_aggregator_enable.bats
@@ -294,6 +294,17 @@ EOF
     grep -q 'fr24key="KEYONLY1234"' "$AGG_FR24_INI"
 }
 
+@test "fr24 ini feeds from the configured decoder address" {
+    # AGG_DECODER_STATE=up (setup) bypasses the live probe; a non-default
+    # AGG_DECODER_ADDR must still flow into fr24feed.ini so fr24 feeds from
+    # exactly the decoder the reachability probe checks.
+    export AGG_DECODER_ADDR="10.9.8.7:31005"
+    agg enable '{"id":"fr24","lat":47.0,"lon":8.0,"alt":400,"fields":{"email":"a@b.c","sharing_key":"PROVIDEDKEY1"}}'
+    [ "$status" -eq 0 ]
+    grep -q 'host="10.9.8.7:31005"' "$AGG_FR24_INI"
+    ! grep -q 'host="127.0.0.1:30005"' "$AGG_FR24_INI"
+}
+
 @test "enable fails cleanly when the local decoder is unreachable" {
     export AGG_DECODER_STATE=down
     agg enable '{"id":"fr24","lat":47.0,"lon":8.0,"alt":400,"fields":{"email":"a@b.c","sharing_key":"VALIDKEY12"}}'