diff --git a/bch_bindgen/src/sb_io.rs b/bch_bindgen/src/sb_io.rs
index 7537560b..46e17673 100644
--- a/bch_bindgen/src/sb_io.rs
+++ b/bch_bindgen/src/sb_io.rs
@@ -4,6 +4,8 @@ use crate::errcode::bch_errcode;
 use crate::path_to_cstr;
 use anyhow::anyhow;
 
+pub use crate::bcachefs::bch2_free_super;
+
 pub fn read_super_opts(
     path: &std::path::Path,
     mut opts: bch_opts,
diff --git a/src/commands/mount.rs b/src/commands/mount.rs
index e01f5388..20b692bc 100644
--- a/src/commands/mount.rs
+++ b/src/commands/mount.rs
@@ -321,7 +321,7 @@ fn cmd_mount_inner(cli: &Cli) -> Result<()> {
     // Grab the udev information once
     let udev_info = udev_bcachefs_info()?;
 
-    let (devices, sbs) = if let Some(("UUID" | "OLD_BLKID_UUID", uuid)) = cli.dev.split_once('=') {
+    let (devices, mut sbs) = if let Some(("UUID" | "OLD_BLKID_UUID", uuid)) = cli.dev.split_once('=') {
         devs_str_sbs_from_uuid(&udev_info, uuid)?
     } else if cli.dev.contains(':') {
         // If the device string contains ":" we will assume the user knows the
@@ -343,11 +343,16 @@ fn cmd_mount_inner(cli: &Cli) -> Result<()> {
 
     ensure!(!sbs.is_empty(), "No device(s) to mount specified");
 
-    let first_sb = sbs[0];
+    let first_sb = &sbs[0];
     if unsafe { bcachefs::bch2_sb_is_encrypted(first_sb.sb) } {
         handle_unlock(cli, &first_sb)?;
     }
 
+    for sb in &mut sbs {
+        unsafe { bch_bindgen::sb_io::bch2_free_super(sb); }
+    }
+    drop(sbs);
+
     if let Some(mountpoint) = cli.mountpoint.as_deref() {
         info!(
             "mounting with params: device: {}, target: {}, options: {}",