diff --git a/module/zfs/rrwlock.c b/module/zfs/rrwlock.c
index 710685dbc7..7bce5dd8d7 100644
--- a/module/zfs/rrwlock.c
+++ b/module/zfs/rrwlock.c
@@ -23,6 +23,8 @@
  * Use is subject to license terms.
  */
 
+#ifdef HAVE_ZPL
+
 #pragma ident	"%Z%%M%	%I%	%E% SMI"
 
 #include <sys/refcount.h>
@@ -247,3 +249,5 @@ rrw_held(rrwlock_t *rrl, krw_t rw)
 
 	return (held);
 }
+
+#endif /* HAVE_ZPL */
diff --git a/module/zfs/spa_boot.c b/module/zfs/spa_boot.c
index 49e9e50193..920feecb24 100644
--- a/module/zfs/spa_boot.c
+++ b/module/zfs/spa_boot.c
@@ -24,6 +24,8 @@
  * Use is subject to license terms.
  */
 
+#ifdef _KERNEL
+
 #pragma ident	"%Z%%M%	%I%	%E% SMI"
 
 #include <sys/spa.h>
@@ -45,3 +47,5 @@ spa_free_bootprop(char *value)
 {
 	ddi_prop_free(value);
 }
+
+#endif /* _KERNEL */
diff --git a/module/zfs/vdev_disk.c b/module/zfs/vdev_disk.c
index 4c241ec212..19cef7339f 100644
--- a/module/zfs/vdev_disk.c
+++ b/module/zfs/vdev_disk.c
@@ -656,6 +656,4 @@ vdev_ops_t vdev_disk_ops = {
 	B_TRUE			/* leaf vdev */
 };
 
-#else
-#error "vdev_disk.c is only required for an in-kernel builds"
 #endif  /* _KERNEL */