diff --git a/homework03/zipcode.sh b/homework03/zipcode.sh
index 10cdd6c..91b7c14 100755
--- a/homework03/zipcode.sh
+++ b/homework03/zipcode.sh
@@ -40,14 +40,14 @@ while [ $# -gt 0 ]; do
     case $1 in
         -s)
             shift
-	    STATE=()
+	    STATE=""
             while [ $# -gt 0 ] && [ "${1#-}" = "$1" ]; do
-                STATE+=("$1")
+                STATE+="$1"
                 shift
             done
             
-            STATE="${STATE[*]}"
-            STATE="${STATE// /%20}"
+            STATE=${STATE[*]}
+            STATE=${STATE// /%20}
             ;;
         -c)
             shift