diff --git a/labs/sysdev-accessing-hardware-beagleplay/sysdev-accessing-hardware-beagleplay.tex b/labs/sysdev-accessing-hardware-beagleplay/sysdev-accessing-hardware-beagleplay.tex
index b03861d8eb..f88c371f23 100644
--- a/labs/sysdev-accessing-hardware-beagleplay/sysdev-accessing-hardware-beagleplay.tex
+++ b/labs/sysdev-accessing-hardware-beagleplay/sysdev-accessing-hardware-beagleplay.tex
@@ -416,7 +416,7 @@ \subsection{Customizing the Device Tree}
       We just know that they are currently not bound to a kernel driver.
 \end{itemize}
 
-Now try to probe \busname\  through \code{i2cdetect -r 4}.
+Now try to probe I2C4  through \code{i2cdetect -r 4}.
 
 You will see that the command will fail to connect to
 the bus. That's because the corresponding signals are