diff --git a/src/tests/vm/qsort.h b/src/tests/vm/qsort.h
new file mode 100644
index 0000000000000000000000000000000000000000..61b65f3e914694c6de1833399ac8be32972b326f
--- /dev/null
+++ b/src/tests/vm/qsort.h
@@ -0,0 +1,8 @@
+#ifndef TESTS_VM_QSORT_H
+#define TESTS_VM_QSORT_H 1
+
+#include <stddef.h>
+
+void qsort_bytes (unsigned char *buf, size_t size);
+
+#endif /* tests/vm/qsort.h */