diff --git a/config/generic-cramps.cfg b/config/generic-cramps.cfg
index 969faaf2..70c3d578 100644
--- a/config/generic-cramps.cfg
+++ b/config/generic-cramps.cfg
@@ -64,7 +64,7 @@ max_temp: 130
 pin: P9_41
 
 [mcu]
-serial: /dev/rpmsg_30
+serial: /dev/rpmsg_pru30
 pin_map: beaglebone
 
 [printer]
diff --git a/config/generic-replicape.cfg b/config/generic-replicape.cfg
index 82f72863..376bbe9b 100644
--- a/config/generic-replicape.cfg
+++ b/config/generic-replicape.cfg
@@ -67,7 +67,7 @@ position_max: 200
 #pin: ?
 
 [mcu]
-serial: /dev/rpmsg_30
+serial: /dev/rpmsg_pru30
 pin_map: beaglebone
 
 [printer]