diff --git a/dist/index.html b/dist/index.html
index 84d52b7..61b2d08 100644
--- a/dist/index.html
+++ b/dist/index.html
@@ -2475,7 +2475,7 @@ try {
             warnedUserAboutLSIssue = true;
             (0, _toast.toast)(`Storage issue : ${e?.message}`);
         }
-        console.warn(e);
+        console.warn('Reading ' + key, e);
     }
 } catch (e) {
     console.warn(e);
@@ -6168,6 +6168,14 @@ migrate("set_breakout_71_unlocked_levels" + (0, _versionJsonDefault.default), ()
     });
     localStorage.setItem("breakout_71_unlocked_levels", JSON.stringify(breakout_71_unlocked_levels));
 });
+migrate('clean_ls', ()=>{
+    for(let key in localStorage)try {
+        JSON.parse(localStorage.getItem(key) || "null");
+    } catch (e) {
+        localStorage.removeItem(key);
+        console.warn('Removed invalid key ' + key, e);
+    }
+});
 afterMigration();
 
 },{"./data/version.json":"iyP6E","./generateSaveFileContent":"iEcoB","./game_utils":"cEeac","./loadGameData":"l1B4x","@parcel/transformer-js/src/esmodule-helpers.js":"gkKU3","./toast":"nAuvo"}],"iEcoB":[function(require,module,exports,__globalThis) {
diff --git a/src/migrations.ts b/src/migrations.ts
index ab6fa88..ad2474f 100644
--- a/src/migrations.ts
+++ b/src/migrations.ts
@@ -140,4 +140,16 @@ migrate("set_breakout_71_unlocked_levels" + _appVersion, () => {
   );
 });
 
+migrate('clean_ls', ()=>{
+   for (let key in localStorage) {
+    try {
+        JSON.parse(localStorage.getItem(key) || "null");
+    } catch (e) {
+      localStorage.removeItem(key)
+      console.warn('Removed invalid key '+key,e);
+    }
+  }
+
+})
+
 afterMigration();
diff --git a/src/settings.ts b/src/settings.ts
index a21c6ce..d302179 100644
--- a/src/settings.ts
+++ b/src/settings.ts
@@ -14,7 +14,7 @@ try {
         warnedUserAboutLSIssue = true;
         toast(`Storage issue : ${(e as Error)?.message}`);
       }
-      console.warn(e);
+      console.warn('Reading '+key,e);
     }
   }
 } catch (e) {