diff --git a/labs/kernel-beagleplay-serial-dma/kernel-beagleplay-serial-dma.tex b/labs/kernel-beagleplay-serial-dma/kernel-beagleplay-serial-dma.tex
index 7fa32d719e..abf937fa17 100644
--- a/labs/kernel-beagleplay-serial-dma/kernel-beagleplay-serial-dma.tex
+++ b/labs/kernel-beagleplay-serial-dma/kernel-beagleplay-serial-dma.tex
@@ -66,7 +66,7 @@ \section{Prepare the DMA controller}
 dmas = <[controller reference] [dma-cells parameters]>
 \end{verbatim}
 
-Go to your kernel source tree and open the \code{Documentation/devicetree/bindings/dma/ti/k3-pktdma.yaml} file, which contains the bindings for the AM62x PKTDMA controller. Find the description of the \code{#dma-cells} property. You will see that two cells are required: the first one is the thread ID for the UART controller and the second one is the ASEL value for the channel.
+Go to your kernel source tree and open the \kfile{Documentation/devicetree/bindings/dma/ti/k3-pktdma.yaml} file, which contains the bindings for the AM62x PKTDMA controller. Find the description of the \code{#dma-cells} property. You will see that two cells are required: the first one is the thread ID for the UART controller and the second one is the ASEL value for the channel.
 
 In our case, the ASEL value is 0, so we only need the thread ID. This can be found in the TRM and on other TI documents online, but as it is quite difficult to find, we will give the values to you: