diff --git a/build.sh b/build.sh
index 5205ce0..55974cf 100755
--- a/build.sh
+++ b/build.sh
@@ -24,7 +24,7 @@ if [ -z "${gluon_path}" ]; then
 	echo "Usage: $0 -g GLUON_PATH" >&2
 	echo "       -g GLUON_PATH   Path to a checkout of the gluon repository." >&2
 	echo "       -l SITES        Comma separated list of sites to build" >&2
-	echo "       -o OUT_PATH     Path to a checkout of the gluon repository. Default: ${gluon_out}" >&2
+	echo "       -o OUT_PATH     Path to the firmware output directory. Default: ${gluon_out}" >&2
 	echo "       -s SIGNATURE    Sign firmware with signature" >&2
 	echo "       -u UPLOADSCRIPT Run UPLOADSCRIPT after building. Argument: $gluon_out/<GLUON_RELEASE>" >&2
 	echo "       -b              BROKEN=1" >&2