diff --git a/include/mbedtls/ssl_internal.h b/include/mbedtls/ssl_internal.h
index cca71e7..c36c2ad 100644
--- a/include/mbedtls/ssl_internal.h
+++ b/include/mbedtls/ssl_internal.h
@@ -1111,4 +1111,20 @@
 }
 #endif /* MBEDTLS_SSL_EXTENDED_MASTER_SECRET */
 
+
+/*
+ * Accessor functions for optional fields of various structures
+ */
+
+static inline int mbedtls_ssl_handshake_get_resume(
+        const mbedtls_ssl_handshake_params *handshake )
+{
+#if !defined(MBEDTLS_SSL_NO_SESSION_RESUMPTION)
+    return( handshake->resume );
+#else
+    (void) handshake;
+    return( 0 );
+#endif
+}
+
 #endif /* ssl_internal.h */