diff --git a/README.md b/README.md
index eb0f98fb..92360773 100644
--- a/README.md
+++ b/README.md
@@ -55,7 +55,7 @@ Impure incremental build and execution on a remote JTAG server:
 nix-shell
 cd src
 gateware/zc706.py -g ../build/gateware -v <variant> # build gateware
-make GWARGS="-v <variant>" <runtime/satman>    # build firmware
+make GWARGS="-V <variant>" <runtime/satman>    # build firmware
 cd ..
 ./remote_run.sh -i
 ```