diff --git a/extensions/oidc-client/runtime/src/main/java/io/quarkus/oidc/client/runtime/OidcClientImpl.java b/extensions/oidc-client/runtime/src/main/java/io/quarkus/oidc/client/runtime/OidcClientImpl.java
index 06a59c1f543da..bbb62b55b0c00 100644
--- a/extensions/oidc-client/runtime/src/main/java/io/quarkus/oidc/client/runtime/OidcClientImpl.java
+++ b/extensions/oidc-client/runtime/src/main/java/io/quarkus/oidc/client/runtime/OidcClientImpl.java
@@ -122,7 +122,11 @@ public Uni<Tokens> get() {
                         .onFailure(ConnectException.class)
                         .retry()
                         .atMost(oidcConfig.connectionRetryCount)
-                        .onFailure().transform(t -> t.getCause());
+                        .onFailure().transform(t -> {
+                            LOG.warn("OIDC Server is not available:", t.getCause() != null ? t.getCause() : t);
+                            // don't wrap t to avoid information leak
+                            return new OidcClientException("OIDC Server is not available");
+                        });
                 return response.onItem()
                         .transform(resp -> emitGrantTokens(resp, refresh));
             }