diff --git a/src/engine/strat_engine/thinpool/filesystem.rs b/src/engine/strat_engine/thinpool/filesystem.rs
index 115c63a928..f3dac02b1f 100644
--- a/src/engine/strat_engine/thinpool/filesystem.rs
+++ b/src/engine/strat_engine/thinpool/filesystem.rs
@@ -243,7 +243,7 @@ impl StratFilesystem {
         let mut needs_save = false;
         let original_state = self.cached(|fs| StratFilesystemState {
             size: fs.size(),
-            used: fs.used().ok(),
+            used: fs.used,
         });
         match self.thin_dev.status(get_dm(), DmOptions::default())? {
             ThinStatus::Working(_) => {