diff --git a/sys/fs/devfs/devfs_vfsops.c b/sys/fs/devfs/devfs_vfsops.c
--- a/sys/fs/devfs/devfs_vfsops.c
+++ b/sys/fs/devfs/devfs_vfsops.c
@@ -230,8 +230,8 @@
 	sbp->f_bsize = DEV_BSIZE;
 	sbp->f_iosize = DEV_BSIZE;
 	sbp->f_blocks = 2;		/* 1K to keep df happy */
-	sbp->f_bfree = 0;
-	sbp->f_bavail = 0;
+	sbp->f_bfree = 2;
+	sbp->f_bavail = 2;
 	sbp->f_files = 0;
 	sbp->f_ffree = 0;
 	return (0);
diff --git a/sys/fs/fdescfs/fdesc_vfsops.c b/sys/fs/fdescfs/fdesc_vfsops.c
--- a/sys/fs/fdescfs/fdesc_vfsops.c
+++ b/sys/fs/fdescfs/fdesc_vfsops.c
@@ -223,8 +223,8 @@
 	sbp->f_bsize = DEV_BSIZE;
 	sbp->f_iosize = DEV_BSIZE;
 	sbp->f_blocks = 2;		/* 1K to keep df happy */
-	sbp->f_bfree = 0;
-	sbp->f_bavail = 0;
+	sbp->f_bfree = 2;
+	sbp->f_bavail = 2;
 	sbp->f_files = lim + 1;		/* Allow for "." */
 	sbp->f_ffree = freefd;		/* See comments above */
 	return (0);
diff --git a/sys/fs/pseudofs/pseudofs.c b/sys/fs/pseudofs/pseudofs.c
--- a/sys/fs/pseudofs/pseudofs.c
+++ b/sys/fs/pseudofs/pseudofs.c
@@ -379,10 +379,10 @@
 	vfs_mountedfrom(mp, pi->pi_name);
 	sbp->f_bsize = PAGE_SIZE;
 	sbp->f_iosize = PAGE_SIZE;
-	sbp->f_blocks = 1;
-	sbp->f_bfree = 0;
-	sbp->f_bavail = 0;
-	sbp->f_files = 1;
+	sbp->f_blocks = 2;
+	sbp->f_bfree = 2;
+	sbp->f_bavail = 2;
+	sbp->f_files = 0;
 	sbp->f_ffree = 0;
 
 	return (0);