diff --git a/script/deploy.sh b/script/deploy.sh
index 2c69eac..a3676e8 100755
--- a/script/deploy.sh
+++ b/script/deploy.sh
@@ -133,6 +133,8 @@ detect_graphics() {
     for b in Intel AMD NVIDIA; do
       if echo "\${line}" | grep -i "\${b}" >> "${REMOTE_STDOUT}" 2>> "${REMOTE_STDERR}"; then
         brand="\${b}"
+      else
+        brand="unknown"
       fi
     done