diff --git a/1.-getting-started/programming/repl/serial.md b/1.-getting-started/programming/repl/serial.md
index 0c9ab13..4b7815f 100644
--- a/1.-getting-started/programming/repl/serial.md
+++ b/1.-getting-started/programming/repl/serial.md
@@ -1,4 +1,4 @@
-# 1.3.4.1 Serial USB
+# 1.3.4.1 Serial USB \(UART\)
 
 To use the REPL, a Pycom device must be connected to the host computer with a USB connection either to an Expansion Board or to serial converter \(a diagram of how to do this can be found the the [getting started](../../gettingstarted.md) page for your module\).
 
diff --git a/SUMMARY.md b/SUMMARY.md
index 3184340..a1a5fde 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -26,7 +26,7 @@
   * [1.3.2 MicroPython Examples](1.-getting-started/programming/examples.md)
   * [1.3.3 Your first Pymakr project](1.-getting-started/programming/first_project.md)
   * [1.3.4 REPL](1.-getting-started/programming/repl/README.md)
-    * [1.3.4.1 Serial USB](1.-getting-started/programming/repl/serial.md)
+    * [1.3.4.1 Serial USB \(UART\)](1.-getting-started/programming/repl/serial.md)
     * [1.3.4.2 Telnet](1.-getting-started/programming/repl/telnet.md)
   * [1.3.5 FTP](1.-getting-started/programming/ftp.md)
   * [1.3.6 Safe boot](1.-getting-started/programming/safeboot.md)