diff --git a/src/define.sh b/src/define.sh
index ea2ffb5..6c9574e 100644
--- a/src/define.sh
+++ b/src/define.sh
@@ -9,6 +9,7 @@ set -Eeuo pipefail
 : "${DETECTED:=""}"
 : "${KEYBOARD:=""}"
 : "${LANGUAGE:=""}"
+: "${USERNAME:=""}"
 : "${PASSWORD:=""}"
 
 MIRRORS=5