diff --git a/tests/suites/test_suite_ssl.function b/tests/suites/test_suite_ssl.function
index 34c4d89e00..d6a7ea8e27 100644
--- a/tests/suites/test_suite_ssl.function
+++ b/tests/suites/test_suite_ssl.function
@@ -6432,7 +6432,7 @@ void write_new_session_ticket_mem()
      * uninitialized memory.
      * The read here causes MSan and Valgrind to complain if the bug isn't fixed.
      */
-    volatile unsigned char lifetime = MBEDTLS_GET_UINT32_BE(server_ep.ssl.out_msg + 4);
+    volatile uint32_t lifetime = MBEDTLS_GET_UINT32_BE(server_ep.ssl.out_msg, 4);
     (void) lifetime;
 
 exit: