diff --git a/pru-cookbook/01case/case.rst b/pru-cookbook/01case/case.rst
index 61e21f02af4e43aa6f5691f02119de6370621fa9..8082060ee5bcc66e3c66810087ca20a35deb448f 100644
--- a/pru-cookbook/01case/case.rst
+++ b/pru-cookbook/01case/case.rst
@@ -26,7 +26,7 @@ independently of the ARM processor, therefore they can
 be programmed to respond quickly to inputs and produce very precisely timed 
 outputs. 
 
-There are many :ref:`Projects <pru-cookbook-projects>`_ that use the PRU.
+There are many :ref:`Projects <pru-cookbook-projects>` that use the PRU.
 They are able to do things that can't be done with just a SBC or just a microcontroller. 
 Here we present some case studies that give a high-level view of using the PRUs. In later
 chapters you will see the details of how they work.