diff --git a/tests/suites/test_suite_ssl.function b/tests/suites/test_suite_ssl.function
index c8acfea..800f6ac 100644
--- a/tests/suites/test_suite_ssl.function
+++ b/tests/suites/test_suite_ssl.function
@@ -1,5 +1,6 @@
 /* BEGIN_HEADER */
 #include <mbedtls/ssl.h>
+#include <mbedtls/ssl_internal.h>
 /* END_HEADER */
 
 /* BEGIN_DEPENDENCIES