diff --git a/rslib/src/storage/card/fix_mod.sql b/rslib/src/storage/card/fix_mod.sql
new file mode 100644
index 000000000..7b15b0e54
--- /dev/null
+++ b/rslib/src/storage/card/fix_mod.sql
@@ -0,0 +1,3 @@
+UPDATE cards
+SET mod = cast(mod AS integer)
+WHERE mod != cast(mod AS integer)
\ No newline at end of file
diff --git a/rslib/src/storage/card/mod.rs b/rslib/src/storage/card/mod.rs
index 3dd981b98..1a16c0c6d 100644
--- a/rslib/src/storage/card/mod.rs
+++ b/rslib/src/storage/card/mod.rs
@@ -353,6 +353,10 @@ impl super::SqliteStorage {
             .db
             .prepare(include_str!("fix_ivl.sql"))?
             .execute(params![mtime, usn])?;
+        other_cnt += self
+            .db
+            .prepare(include_str!("fix_mod.sql"))?
+            .execute(params![])?;
         other_cnt += self
             .db
             .prepare(include_str!("fix_ordinal.sql"))?