diff --git a/tests/suites/test_suite_x509parse.function b/tests/suites/test_suite_x509parse.function
index fe9a73375..9a7a46019 100644
--- a/tests/suites/test_suite_x509parse.function
+++ b/tests/suites/test_suite_x509parse.function
@@ -4,11 +4,21 @@ BEGIN_HEADER
 
 int verify_none( void *data, x509_cert *crt, int certificate_depth, int preverify_ok )
 {
+    ((void) data);
+    ((void) crt);
+    ((void) certificate_depth);
+    ((void) preverify_ok);
+
     return 1;
 }
 
 int verify_all( void *data, x509_cert *crt, int certificate_depth, int preverify_ok )
 {
+    ((void) data);
+    ((void) crt);
+    ((void) certificate_depth);
+    ((void) preverify_ok);
+
     return 0;
 }