diff --git a/content/13_networking.md b/content/13_networking.md
index c9e0947a226361cec49bbbe7dd5c7a5ed9662c7c..8e629517db81d3df51282804a2b05d8511b6f14e 100644
--- a/content/13_networking.md
+++ b/content/13_networking.md
@@ -5,7 +5,7 @@ menu = "main"
 weight = 15
 +++
 
-Files: [audio_interface.sch](/designs/13_audio_interface.sch) [audio_interface.brd](/designs/13_audio_interface.brd) [audio_interface_2.sch](/designs/13_audio_interface_2.sch) [audio_interface.brd_2](/designs/13_audio_interface_2.brd) [serial_cpp](https://gitlab.cba.mit.edu/erik/serial_cpp) [lufa](https://gitlab.cba.mit.edu/erik/lufa) (see Demos/Devices/ClassDriver/VirtualSerial)
+Files: [audio_interface.sch](/designs/13_audio_interface.sch) [audio_interface.brd](/designs/13_audio_interface.brd) [audio_interface_2.sch](/designs/13_audio_interface_2.sch) [audio_interface_2.brd](/designs/13_audio_interface_2.brd) [serial_cpp](https://gitlab.cba.mit.edu/erik/serial_cpp) [lufa](https://gitlab.cba.mit.edu/erik/lufa) (see Demos/Devices/ClassDriver/VirtualSerial)
 
 This week we're making machines talk to each other. I've used I2C before, so I'm curious to venture into the wonderful world of USB.