diff --git a/utils/s2n_init.c b/utils/s2n_init.c
index b8a71a653d5..9c65cb6fa37 100644
--- a/utils/s2n_init.c
+++ b/utils/s2n_init.c
@@ -45,6 +45,12 @@ int s2n_disable_atexit(void)
     return S2N_SUCCESS;
 }
 
+int s2n_enable_atexit(void)
+{
+    atexit_cleanup = true;
+    return S2N_SUCCESS;
+}
+
 int s2n_init(void)
 {
     /* USAGE-GUIDE says s2n_init MUST NOT be called more than once