diff --git a/programs/test/ssl_cert_test.c b/programs/test/ssl_cert_test.c
index 35cdce4..43dc44c 100644
--- a/programs/test/ssl_cert_test.c
+++ b/programs/test/ssl_cert_test.c
@@ -140,7 +140,7 @@
          * 1.3. Load own certificate
          */
         char    name[512];
-        int flags;
+        uint32_t flags;
         mbedtls_x509_crt clicert;
         mbedtls_pk_context pk;