diff --git a/tests/src/test_helpers/ssl_helpers.c b/tests/src/test_helpers/ssl_helpers.c
index 963938f..55201c0 100644
--- a/tests/src/test_helpers/ssl_helpers.c
+++ b/tests/src/test_helpers/ssl_helpers.c
@@ -833,6 +833,12 @@
                                              options->max_early_data_size);
     }
 #endif
+#if defined(MBEDTLS_SSL_ALPN)
+    /* check that alpn_list contains at least one valid entry */
+    if (options->alpn_list[0] != NULL) {
+        mbedtls_ssl_conf_alpn_protocols(&(ep->conf), options->alpn_list);
+    }
+#endif
 #endif
 
 #if defined(MBEDTLS_SSL_CACHE_C) && defined(MBEDTLS_SSL_SRV_C)