diff --git a/98-daplink.rules b/98-daplink.rules
new file mode 100644
index 0000000..9c6acb3
--- /dev/null
+++ b/98-daplink.rules
@@ -0,0 +1,4 @@
+
+# mbed CMSIS-DAP
+ATTRS{idVendor}=="0d28", ATTRS{idProduct}=="0204", MODE="664", GROUP="plugdev"
+KERNEL=="hidraw*", ATTRS{idVendor}=="0d28", ATTRS{idProduct}=="0204", MODE="664", GROUP="plugdev"
diff --git a/README.md b/README.md
index 6f0fa9e..795cc76 100644
--- a/README.md
+++ b/README.md
@@ -61,6 +61,14 @@ Get this driver and install it if you are using an Windows PC, so that you can u
 
 * Note that you do not need any driver for OSX and Linux platforms.
 
+## Add udev rules (Linux only)
+
+Copy file "98-daplink.rules" to path "/etc/udev/rules.d/". Then restart or reloaded with 
+
+    $ sudo udevadm control --reload-rules
+
+We thank bapowell & kdsoo for solving this problem.
+[openocd error on Linux](https://github.com/RedBearLab/nRF51822-Arduino/issues/73)
 
 ## Burn Bootloader