diff --git a/library/mps_reader.c b/library/mps_reader.c
index 9af5073..36958b4 100644
--- a/library/mps_reader.c
+++ b/library/mps_reader.c
@@ -21,7 +21,7 @@
 
 #include "common.h"
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 
 #include "mps_reader.h"
 #include "mps_common.h"
@@ -561,4 +561,4 @@
     MBEDTLS_MPS_TRACE_RETURN( 0 );
 }
 
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */