diff --git a/testsuite/serpent-test.m4 b/testsuite/serpent-test.m4
new file mode 100644
index 0000000000000000000000000000000000000000..d46a8f3c546527a972b03e6b7605fb9060b54bad
--- /dev/null
+++ b/testsuite/serpent-test.m4
@@ -0,0 +1,13 @@
+#include "serpent.h"
+
+BEGIN_TEST
+
+struct serpent_ctx ctx;
+
+uint8_t msg[SERPENT_BLOCK_SIZE];
+uint8_t cipher[SERPENT_BLOCK_SIZE];
+uint8_t clear[SERPENT_BLOCK_SIZE];
+
+/* FIXME: No tests! */
+
+#warning no tests