diff --git a/lib/config-loader.js b/lib/config-loader.js
index 50fab3d..44e32db 100644
--- a/lib/config-loader.js
+++ b/lib/config-loader.js
@@ -33,9 +33,10 @@ function load (settings) {
 // Returns a promise
 function loadConfig (client) {
   return load(client.settings).then((config) => {
-    client.apiUrl = `${config.cluster}/oapi/${config.apiVersion}`;
-    client.kubeUrl = `${config.cluster}/api/${config.apiVersion}`;
-    client.authUrl = `${config.cluster}/oauth/authorize?response_type=token&client_id=openshift-challenging-client`;
+    const clusterUrl = removeTrailingSlash(config.cluster);
+    client.apiUrl = `${clusterUrl}/oapi/${config.apiVersion}`;
+    client.kubeUrl = `${clusterUrl}/api/${config.apiVersion}`;
+    client.authUrl = `${clusterUrl}/oauth/authorize?response_type=token&client_id=openshift-challenging-client`;
     client.apis = {
       oapi: {
         version: config.apiVersion,
@@ -63,4 +64,8 @@ function loadConfig (client) {
   });
 }
 
+function removeTrailingSlash (url) {
+  return url.endsWith('/') ? url.slice(0, url.length - 1) : url;
+}
+
 module.exports = loadConfig;