diff --git a/koha-tmpl/intranet-tmpl/prog/js/fetch/http-client.js b/koha-tmpl/intranet-tmpl/prog/js/fetch/http-client.js
index 8f2c3d3ab2..ee2722faa6 100644
--- a/koha-tmpl/intranet-tmpl/prog/js/fetch/http-client.js
+++ b/koha-tmpl/intranet-tmpl/prog/js/fetch/http-client.js
@@ -68,6 +68,11 @@ class HttpClient {
                 const is_json = response.headers
                     .get("content-type")
                     ?.includes("application/json");
+
+                if (return_response || !is_json) {
+                    return response;
+                }
+
                 if (!response.ok) {
                     return response.text().then(text => {
                         let message;
@@ -83,9 +88,6 @@ class HttpClient {
                         throw new Error(message);
                     });
                 }
-                if (return_response || !is_json) {
-                    return response;
-                }
                 return response.json();
             })
             .then(result => {