diff --git a/target/generic/target_busybox_skeleton/etc/securetty b/target/generic/target_busybox_skeleton/etc/securetty
index 81616f38ea..1b084acb81 100644
--- a/target/generic/target_busybox_skeleton/etc/securetty
+++ b/target/generic/target_busybox_skeleton/etc/securetty
@@ -10,3 +10,7 @@ ttyS0
 ttyS1
 ttyS2
 ttyS3
+ttyUL0
+ttyUL1
+ttyUL2
+ttyUL3
diff --git a/target/generic/target_skeleton/etc/securetty b/target/generic/target_skeleton/etc/securetty
index 81616f38ea..1b084acb81 100644
--- a/target/generic/target_skeleton/etc/securetty
+++ b/target/generic/target_skeleton/etc/securetty
@@ -10,3 +10,7 @@ ttyS0
 ttyS1
 ttyS2
 ttyS3
+ttyUL0
+ttyUL1
+ttyUL2
+ttyUL3