diff --git a/debug-level-conf/50-tty.rules b/debug-level-conf/50-tty.rules
index cee204d..9c16d1e 100644
--- a/debug-level-conf/50-tty.rules
+++ b/debug-level-conf/50-tty.rules
@@ -1,4 +1,5 @@
 SUBSYSTEM=="pps[0-9]*", GROUP="dialout", MODE="0660"
 SUBSYSTEM=="tty[0-9]*", GROUP="dialout", MODE="0660"
 SUBSYSTEM=="tty[A-Z]*[0-9]*", GROUP="dialout", MODE="0660"
-SUBSYSTEM=="i2c[A-Z]-*[0-9]*", GROUP="dialout", MODE="0660"
\ No newline at end of file
+SUBSYSTEM=="i2c[A-Z]-*[0-9]*", GROUP="dialout", MODE="0660"
+SUBSYSTEM=="rtc[0-9]*", GROUP="dialout", MODE="0660"
\ No newline at end of file