diff --git a/labs/sysdev-block-filesystems-bbb/sysdev-block-filesystems-bbb.tex b/labs/sysdev-block-filesystems-bbb/sysdev-block-filesystems-bbb.tex
index 5d25840141..f60791ed86 100644
--- a/labs/sysdev-block-filesystems-bbb/sysdev-block-filesystems-bbb.tex
+++ b/labs/sysdev-block-filesystems-bbb/sysdev-block-filesystems-bbb.tex
@@ -164,6 +164,6 @@ \section{Loading the kernel and DTB from the SD card}
 
 Now, the whole system (bootloader, kernel and filesystems) is
 stored on the SD card. That's very useful for product demos, for
-examples. You can switch demos by switching SD cards, and the
+example. You can switch demos by switching SD cards, and the
 system depends on nothing else. In particular, no networking is
 necessary.
diff --git a/labs/sysdev-block-filesystems-beagleplay/sysdev-block-filesystems-beagleplay.tex b/labs/sysdev-block-filesystems-beagleplay/sysdev-block-filesystems-beagleplay.tex
index 10bfda0328..44a8303d45 100644
--- a/labs/sysdev-block-filesystems-beagleplay/sysdev-block-filesystems-beagleplay.tex
+++ b/labs/sysdev-block-filesystems-beagleplay/sysdev-block-filesystems-beagleplay.tex
@@ -164,6 +164,6 @@ \section{Loading the kernel and DTB from the SD card}
 
 Now, the whole system (bootloader, kernel and filesystems) is
 stored on the SD card. That's very useful for product demos, for
-examples. You can switch demos by switching SD cards, and the
+example. You can switch demos by switching SD cards, and the
 system depends on nothing else. In particular, no networking is
 necessary.
diff --git a/labs/sysdev-block-filesystems-stm32/sysdev-block-filesystems-stm32.tex b/labs/sysdev-block-filesystems-stm32/sysdev-block-filesystems-stm32.tex
index 9c7707d026..1859c760ba 100644
--- a/labs/sysdev-block-filesystems-stm32/sysdev-block-filesystems-stm32.tex
+++ b/labs/sysdev-block-filesystems-stm32/sysdev-block-filesystems-stm32.tex
@@ -171,6 +171,6 @@ \section{Loading the kernel and DTB from the SD card}
 
 Now, the whole system (bootloader, kernel and filesystems) is
 stored on the SD card. That's very useful for product demos, for
-examples. You can switch demos by switching SD cards, and the
+example. You can switch demos by switching SD cards, and the
 system depends on nothing else. In particular, no networking is
 necessary.