diff --git a/Appendix-A:-Printed-circuit-boards.md b/Appendix-A:-Printed-circuit-boards.md
index c817e74..31600b7 100644
--- a/Appendix-A:-Printed-circuit-boards.md
+++ b/Appendix-A:-Printed-circuit-boards.md
@@ -39,7 +39,7 @@ At some point, you'll have to upload design files to the production company. Sen
 
 ## Step 2: Order the electronics components
 
-All of the components are described in [the schematics of the PCBs](https://github.com/ploopyco/mouse/tree/master/hardware/Electronics/Schematics). Ordering the components is left as an exercise for the reader. Here are a few tips:
+All of the components are described in [the schematics of the PCBs](https://github.com/ploopyco/trackball/tree/master/hardware/Electronics/Schematics). Ordering the components is left as an exercise for the reader. Here are a few tips:
 
 - We used Alibaba to order PMW3360 sensors
 - Digikey and Mouser carry all of the other electrical components