diff --git a/sys/cam/ctl/ctl_util.c b/sys/cam/ctl/ctl_util.c
index 6fcec03f78d1..33f0899b02d3 100644
--- a/sys/cam/ctl/ctl_util.c
+++ b/sys/cam/ctl/ctl_util.c
@@ -697,7 +697,6 @@ ctl_scsi_free_io(union ctl_io *io)
 	free(io);
 }
 
-#endif /* !_KERNEL */
 void
 ctl_scsi_zero_io(union ctl_io *io)
 {
@@ -707,11 +706,10 @@ ctl_scsi_zero_io(union ctl_io *io)
 		return;
 
 	pool_ref = io->io_hdr.pool;
-
 	memset(io, 0, sizeof(*io));
-
 	io->io_hdr.pool = pool_ref;
 }
+#endif /* !_KERNEL */
 
 const char *
 ctl_scsi_task_string(struct ctl_taskio *taskio)
diff --git a/sys/cam/ctl/ctl_util.h b/sys/cam/ctl/ctl_util.h
index 2966b4916470..67c091542367 100644
--- a/sys/cam/ctl/ctl_util.h
+++ b/sys/cam/ctl/ctl_util.h
@@ -96,8 +96,10 @@ void ctl_scsi_maintenance_in(union ctl_io *io, uint8_t *data_ptr,
 #ifndef _KERNEL
 union ctl_io *ctl_scsi_alloc_io(uint32_t initid);
 void ctl_scsi_free_io(union ctl_io *io);
-#endif /* !_KERNEL */
 void ctl_scsi_zero_io(union ctl_io *io);
+#else
+#define	ctl_scsi_zero_io(io)	ctl_zero_io(io)
+#endif /* !_KERNEL */
 const char *ctl_scsi_task_string(struct ctl_taskio *taskio);
 void ctl_io_sbuf(union ctl_io *io, struct sbuf *sb);
 void ctl_io_error_sbuf(union ctl_io *io,