diff --git a/manjaro-arm-installer b/manjaro-arm-installer
index 181feb7..e27eb68 100755
--- a/manjaro-arm-installer
+++ b/manjaro-arm-installer
@@ -389,7 +389,7 @@ if [ ! -z "$EDITION" ]; then
 	--inputbox "Enter the username you want:
 (usernames most be all lowercase)" 8 50 \
 	3>&1 1>&2 2>&3 3>&-)
-    if [[ "$USER" =~ [A-Z] ]] || [[ "$USER" == *['!'@#\$%^\&*()_+]* ]]; then
+    if [[ "$USER" =~ [A-Z] ]] || [[ "$USER" =~ [0-9] ]] || [[ "$USER" == *['!'@#\$%^\&*()_+]* ]]; then
     clear
     msg "Configuration aborted! Username contained invalid characters."
     exit 1