diff --git a/tests/suites/test_suite_ssl.function b/tests/suites/test_suite_ssl.function
index c381860f95..7ba5670a98 100644
--- a/tests/suites/test_suite_ssl.function
+++ b/tests/suites/test_suite_ssl.function
@@ -4675,12 +4675,27 @@ void tls13_srv_max_early_data_size(int scenario, int max_early_data_size_arg, in
             case TEST_EARLY_DATA_HRR:
                 ret = mbedtls_ssl_handshake(&(server_ep.ssl));
                 /*
-                 * Can be the case if max_early_data_size is smaller then the
-                 * smallest inner content or protected record.
+                 * In this write loop we try to always stay below the
+                 * max_early_data_size limit but if max_early_data_size is very
+                 * small we may exceed the max_early_data_size limit on the
+                 * first write. In TEST_EARLY_DATA_SERVER_REJECTS/
+                 * TEST_EARLY_DATA_HRR scenario, this is for sure the case if
+                 * max_early_data_size is smaller than the smallest possible
+                 * inner content/protected record. Take into account this
+                 * possibility here but only for max_early_data_size values
+                 * that are close to write_size. Below, chosen 1 for one byte
+                 * of inner type and 16 bytes for AEAD expansion (IV, ...).
                  */
                 if (ret == MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE) {
-                    /* Beyond 64 for max_early_data_size it is suspicious */
-                    TEST_ASSERT(max_early_data_size < 64);
+                    if (scenario == TEST_EARLY_DATA_SERVER_REJECTS) {
+                        TEST_LE_U(max_early_data_size,
+                                  write_size + 1 +
+                                  MBEDTLS_SSL_CID_TLS1_3_PADDING_GRANULARITY);
+                    } else {
+                        TEST_LE_U(max_early_data_size,
+                                  write_size + 1 + 16 +
+                                  MBEDTLS_SSL_CID_TLS1_3_PADDING_GRANULARITY);
+                    }
                     goto exit;
                 }