diff --git a/scm-ui/src/apiclient.js b/scm-ui/src/apiclient.js
index f8fd7f8f3f..7326e78820 100644
--- a/scm-ui/src/apiclient.js
+++ b/scm-ui/src/apiclient.js
@@ -26,15 +26,15 @@ function handleStatusCode(response: Response) {
   return response;
 }
 
-function createUrl(url: string) {
+export function createUrl(url: string) {
   if (url.indexOf("://") > 0) {
     return url;
   }
-  let urlWithEndingSlash = url;
+  let urlWithStartingSlash = url;
   if (url.indexOf("/") !== 0) {
-    urlWithEndingSlash += "/";
+    urlWithStartingSlash = "/" + urlWithStartingSlash;
   }
-  return `${apiUrl}/api/rest/v2${urlWithEndingSlash}`;
+  return `${apiUrl}/api/rest/v2${urlWithStartingSlash}`;
 }
 
 class ApiClient {
diff --git a/scm-ui/src/apiclient.test.js b/scm-ui/src/apiclient.test.js
new file mode 100644
index 0000000000..2a185196d5
--- /dev/null
+++ b/scm-ui/src/apiclient.test.js
@@ -0,0 +1,13 @@
+// @flow
+import { createUrl } from "./apiclient";
+
+test("create url, should not change absolute urls", () => {
+  expect(createUrl("https://www.scm-manager.org")).toBe(
+    "https://www.scm-manager.org"
+  );
+});
+
+test("create url, should add prefix for api", () => {
+  expect(createUrl("/users")).toBe("/scm/api/rest/v2/users");
+  expect(createUrl("users")).toBe("/scm/api/rest/v2/users");
+});