diff --git a/ts/deck-options/FsrsOptions.svelte b/ts/deck-options/FsrsOptions.svelte
index 9c076362d..d5b8e7651 100644
--- a/ts/deck-options/FsrsOptions.svelte
+++ b/ts/deck-options/FsrsOptions.svelte
@@ -118,7 +118,9 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
                     });
                     if (
                         $config.fsrsWeights.length &&
-                        $config.fsrsWeights.every((n, i) => n === resp.weights[i])
+                        $config.fsrsWeights.every(
+                            (n, i) => n.toFixed(4) === resp.weights[i].toFixed(4),
+                        )
                     ) {
                         alert(tr.deckConfigFsrsParamsOptimal());
                     }