diff --git a/udev/51-trezor.rules b/udev/51-trezor.rules
index 67b0f95623..6d675fe2c4 100644
--- a/udev/51-trezor.rules
+++ b/udev/51-trezor.rules
@@ -3,15 +3,15 @@
 # Put this file into /usr/lib/udev/rules.d
 
 # TREZOR
-SUBSYSTEM=="usb", ATTR{idVendor}=="534c", ATTR{idProduct}=="0001", MODE="0666", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl", SYMLINK+="trezor%n"
-KERNEL=="hidraw*", ATTRS{idVendor}=="534c", ATTRS{idProduct}=="0001",  MODE="0666", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl"
+SUBSYSTEM=="usb", ATTR{idVendor}=="534c", ATTR{idProduct}=="0001", MODE="0660", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl", SYMLINK+="trezor%n"
+KERNEL=="hidraw*", ATTRS{idVendor}=="534c", ATTRS{idProduct}=="0001",  MODE="0660", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl"
 
 # TREZOR v2
-SUBSYSTEM=="usb", ATTR{idVendor}=="1209", ATTR{idProduct}=="53c0", MODE="0666", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl", SYMLINK+="trezor%n"
-SUBSYSTEM=="usb", ATTR{idVendor}=="1209", ATTR{idProduct}=="53c1", MODE="0666", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl", SYMLINK+="trezor%n"
-KERNEL=="hidraw*", ATTRS{idVendor}=="1209", ATTRS{idProduct}=="53c0",  MODE="0666", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl"
-KERNEL=="hidraw*", ATTRS{idVendor}=="1209", ATTRS{idProduct}=="53c1",  MODE="0666", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl"
+SUBSYSTEM=="usb", ATTR{idVendor}=="1209", ATTR{idProduct}=="53c0", MODE="0660", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl", SYMLINK+="trezor%n"
+SUBSYSTEM=="usb", ATTR{idVendor}=="1209", ATTR{idProduct}=="53c1", MODE="0660", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl", SYMLINK+="trezor%n"
+KERNEL=="hidraw*", ATTRS{idVendor}=="1209", ATTRS{idProduct}=="53c0",  MODE="0660", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl"
+KERNEL=="hidraw*", ATTRS{idVendor}=="1209", ATTRS{idProduct}=="53c1",  MODE="0660", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl"
 
 # TREZOR Raspberry Pi Shield
-SUBSYSTEM=="usb", ATTR{idVendor}=="10c4", ATTR{idProduct}=="ea80", MODE="0666", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl", SYMLINK+="trezor%n"
-KERNEL=="hidraw*", ATTRS{idVendor}=="10c4", ATTRS{idProduct}=="ea80",  MODE="0666", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl"
+SUBSYSTEM=="usb", ATTR{idVendor}=="10c4", ATTR{idProduct}=="ea80", MODE="0660", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl", SYMLINK+="trezor%n"
+KERNEL=="hidraw*", ATTRS{idVendor}=="10c4", ATTRS{idProduct}=="ea80",  MODE="0660", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl"