diff --git a/programs/ssl/ssl_server2.c b/programs/ssl/ssl_server2.c
index ec3d6ad..c11b081 100644
--- a/programs/ssl/ssl_server2.c
+++ b/programs/ssl/ssl_server2.c
@@ -1795,7 +1795,7 @@
 #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
     psa_algorithm_t alg = 0;
-    psa_key_handle_t psk_slot = 0;
+    psa_key_handle_t psk_slot = PSA_KEY_HANDLE_INIT;
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
     unsigned char psk[MBEDTLS_PSK_MAX_LEN];
     size_t psk_len = 0;