diff --git a/cmd/drone-server/inject_login.go b/cmd/drone-server/inject_login.go
index f9c84f9ab..27f35b7a4 100644
--- a/cmd/drone-server/inject_login.go
+++ b/cmd/drone-server/inject_login.go
@@ -169,7 +169,7 @@ func provideRefresher(config config.Config) *oauth2.Refresher {
 		return &oauth2.Refresher{
 			ClientID:     config.Gitea.ClientID,
 			ClientSecret: config.Gitea.ClientSecret,
-			Endpoint:     config.Gitea.Server + "/login/oauth/access_token",
+			Endpoint:     strings.TrimSuffix(config.Gitea.Server, "/") + "/login/oauth/access_token",
 			Source:       oauth2.ContextTokenSource(),
 			Client:       defaultClient(config.Gitea.SkipVerify),
 		}