diff --git a/sandbox-systrace.c b/sandbox-systrace.c
index 8ebdb73df..46c36a767 100644
--- a/sandbox-systrace.c
+++ b/sandbox-systrace.c
@@ -15,6 +15,10 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#include "includes.h"
+
+#ifdef SANDBOX_SYSTRACE
+
 #include <sys/types.h>
 #include <sys/ioctl.h>
 #include <sys/syscall.h>
@@ -91,7 +95,7 @@ struct ssh_sandbox {
 };
 
 struct ssh_sandbox *
-ssh_sandbox_init(void)
+ssh_sandbox_init(struct monitor *monitor)
 {
 	struct ssh_sandbox *box;
 
@@ -208,3 +212,5 @@ ssh_sandbox_parent_preauth(struct ssh_sandbox *box, pid_t child_pid)
 {
 	ssh_sandbox_parent(box, child_pid, preauth_policy);
 }
+
+#endif /* SANDBOX_SYSTRACE */