diff --git a/config.sh b/config.sh
index 9a1c8f88..f06c49fd 100755
--- a/config.sh
+++ b/config.sh
@@ -1155,10 +1155,10 @@ pangolin_create_resources() {
       local err_msg
       err_msg=$(echo "$res_resp" | jq -r '.message // "unknown error"' 2>/dev/null)
       if echo "$err_msg" | grep -qi "already exists\|duplicate\|conflict"; then
-        ((skipped++))
+        skipped=$((skipped + 1))
       else
         warn "  Failed to create $full_domain: $err_msg"
-        ((failed++))
+        failed=$((failed + 1))
       fi
       continue
     fi
@@ -1175,7 +1175,7 @@ pangolin_create_resources() {
     pangolin_api POST "$api_url/resource/$resource_id" "$api_key" \
       '{"sso":false,"blockAccess":false}' >/dev/null
 
-    ((created++))
+    created=$((created + 1))
   done
 
   if [[ $created -gt 0 ]]; then