diff --git a/user/bsps/aarch64/a53.rst b/user/bsps/aarch64/a53.rst
index 02891e0..52e1509 100644
--- a/user/bsps/aarch64/a53.rst
+++ b/user/bsps/aarch64/a53.rst
@@ -32,4 +32,4 @@ Running Executables
 Executables generated by these BSPs can be run using the following command::
 
 qemu-system-aarch64 -no-reboot -nographic -serial mon:stdio \
- -machine virt,gic_version=3 -cpu cortex-a53 -m 4096 -kernel example.exe
+ -machine virt,gic-version=3 -cpu cortex-a53 -m 4096 -kernel example.exe