diff --git a/library/ssl_tls12_server.c b/library/ssl_tls12_server.c
index b5b975f..81ee600 100644
--- a/library/ssl_tls12_server.c
+++ b/library/ssl_tls12_server.c
@@ -3921,7 +3921,7 @@
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
         psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
         psa_status_t destruction_status = PSA_ERROR_CORRUPTION_DETECTED;
-        uint8_t ecpoint_len;
+        size_t ecpoint_len;
 
         mbedtls_ssl_handshake_params *handshake = ssl->handshake;