diff --git a/services/src/main/java/org/keycloak/services/resources/admin/info/ServerInfoAdminResource.java b/services/src/main/java/org/keycloak/services/resources/admin/info/ServerInfoAdminResource.java
index 9b66c7f8be..8785ad9db4 100755
--- a/services/src/main/java/org/keycloak/services/resources/admin/info/ServerInfoAdminResource.java
+++ b/services/src/main/java/org/keycloak/services/resources/admin/info/ServerInfoAdminResource.java
@@ -113,7 +113,7 @@ public class ServerInfoAdminResource {
                                 Collectors.toMap(
                                         ClientSignatureVerifierProvider::isAsymmetricAlgorithm,
                                         clientSignatureVerifier -> Collections.singletonList(clientSignatureVerifier.getAlgorithm()),
-                                        (l1, l2) -> listCombiner(l1, l2)
+                                        (l1, l2) -> ServerInfoAdminResource.<String>listCombiner(l1, l2)
                                                 .stream()
                                                 .sorted()
                                                 .collect(Collectors.toList()),