diff --git a/include/mbedtls/ssl.h b/include/mbedtls/ssl.h
index 39bea79..a6ee9a4 100644
--- a/include/mbedtls/ssl.h
+++ b/include/mbedtls/ssl.h
@@ -1312,6 +1312,9 @@
 
 #if defined(MBEDTLS_SSL_EARLY_DATA)
     uint32_t MBEDTLS_PRIVATE(max_early_data_size);          /*!< maximum amount of early data in tickets */
+#if defined(MBEDTLS_SSL_ALPN) && defined(MBEDTLS_SSL_SRV_C)
+    char *alpn;                      /*!< ALPN negotiated in the session */
+#endif
 #endif
 
 #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)