Small improvement to test script
diff --git a/tests/scripts/yotta-build.sh b/tests/scripts/yotta-build.sh
index 2648d3e..0651bae 100755
--- a/tests/scripts/yotta-build.sh
+++ b/tests/scripts/yotta-build.sh
@@ -12,8 +12,7 @@
 {
     TARGET=$1
     echo; echo "*** $TARGET ***"
-    yt target $TARGET
-    yt build
+    yt -t $TARGET build
 }
 
 if uname -a | grep 'Linux.*x86' >/dev/null; then