diff --git a/src/main/java/org/olat/user/restapi/UserWebService.java b/src/main/java/org/olat/user/restapi/UserWebService.java
index 8b8ffac5a68a85a7d906b72addf9e39bb7968b14..77da3d79843a5367df4cd391fd1d74663cba684d 100644
--- a/src/main/java/org/olat/user/restapi/UserWebService.java
+++ b/src/main/java/org/olat/user/restapi/UserWebService.java
@@ -135,16 +135,12 @@ public class UserWebService {
 	public Response getUserListQuery(@QueryParam("login") String login, @QueryParam("authProvider") String authProvider,
 			@QueryParam("authUsername") String authUsername,
 			@Context UriInfo uriInfo, @Context HttpServletRequest httpRequest) {
-		MultivaluedMap<String,String> params = uriInfo.getQueryParameters();
-		return getUserList(login, authProvider, authUsername, params, uriInfo, httpRequest);
-	}
-
-	private Response getUserList(String login, String authProvider, String authUsername, Map<String,List<String>> params,
-			UriInfo uriInfo, HttpServletRequest httpRequest) {
+		
 		if(!isUserManager(httpRequest)) {
 			return Response.serverError().status(Status.UNAUTHORIZED).build();
 		}
 		
+		MultivaluedMap<String,String> params = uriInfo.getQueryParameters();
 		List<Identity> identities;
 		//make only a search by authUsername
 		if(StringHelper.containsNonWhitespace(authProvider) && StringHelper.containsNonWhitespace(authUsername)) {
diff --git a/src/test/java/org/olat/test/OlatJerseyTestCase.java b/src/test/java/org/olat/test/OlatJerseyTestCase.java
index 5586d39103b194ddfee223254d171178c4cc15a4..d50021b5a54bd6689ceb72c3c1801ba83d353252 100644
--- a/src/test/java/org/olat/test/OlatJerseyTestCase.java
+++ b/src/test/java/org/olat/test/OlatJerseyTestCase.java
@@ -94,6 +94,7 @@ public abstract class OlatJerseyTestCase extends OlatTestCase {
 	private void instantiateGrizzlyWebServer() {
 		if(webServer == null) {
 			webServer = new GrizzlyWebServer(PORT);
+			webServer.useAsynchronousWrite(false);
 			ServletAdapter sa = new ServletAdapter();
 			Servlet servletInstance = null;
 			try {
@@ -105,7 +106,7 @@ public abstract class OlatJerseyTestCase extends OlatTestCase {
 			sa.addFilter(new RestApiLoginFilter(), "jerseyfilter", null);
 			sa.addInitParameter("javax.ws.rs.Application", OlatRestApplication.class.getName());
 			sa.setContextPath("/" + CONTEXT_PATH);
-			webServer.addGrizzlyAdapter(sa, null);
+			webServer.addGrizzlyAdapter(sa, new String[]{""});
 		}
 	}