diff --git a/src/getting-started/02.00.FLASH.md b/src/getting-started/02.00.FLASH.md
index d07fd90..a87d91e 100644
--- a/src/getting-started/02.00.FLASH.md
+++ b/src/getting-started/02.00.FLASH.md
@@ -71,6 +71,7 @@ available.
 I mentioned that OpenOCD provides a GDB server so let's connect to that right now:
 
 ``` console
+# On Ubuntu use `gdb-mutliarch -q target/thumbv6m-none-eabi/debug/rustled`
 $ arm-none-eabi-gdb -q target/thumbv6m-none-eabi/debug/rustled
 Reading symbols from target/thumbv6m-none-eabi/debug/rustled...done.
 (gdb)
@@ -162,4 +163,4 @@ break rustled::main
 continue
 ```
 
-Now we can learn how to debug code on the micro:bit.
\ No newline at end of file
+Now we can learn how to debug code on the micro:bit.