diff --git a/rslib/src/notes/mod.rs b/rslib/src/notes/mod.rs
index 2243a916d..2b53321b9 100644
--- a/rslib/src/notes/mod.rs
+++ b/rslib/src/notes/mod.rs
@@ -590,9 +590,9 @@ impl Collection {
         Ok(changed_notes)
     }
 
-    /// Check if the note's first field is empty or a duplicate. Then for cloze
-    /// notetypes, check if there is a cloze in a non-cloze field or if there's
-    /// no cloze at all. For other notetypes, just check if there's a cloze.
+    /// Check if there is a cloze in a non-cloze field. Then check if the
+    /// note's first field is empty. For cloze notetypes, check whether there
+    /// is a cloze at all. Finally, check if the first field is a duplicate.
     pub fn note_fields_check(&mut self, note: &Note) -> Result<NoteFieldsState> {
         Ok({
             let cloze_state = self.field_cloze_check(note)?;
diff --git a/rslib/src/scheduler/answering/mod.rs b/rslib/src/scheduler/answering/mod.rs
index e9461279f..13006fa88 100644
--- a/rslib/src/scheduler/answering/mod.rs
+++ b/rslib/src/scheduler/answering/mod.rs
@@ -468,7 +468,7 @@ impl Collection {
             self.get_config_bool(BoolKey::FsrsShortTermWithStepsEnabled);
         let fsrs_allow_short_term = if fsrs_enabled {
             let params = config.fsrs_params();
-            if params.len() == 19 {
+            if params.len() >= 19 {
                 params[17] > 0.0 && params[18] > 0.0
             } else {
                 false
diff --git a/rslib/src/scheduler/fsrs/params.rs b/rslib/src/scheduler/fsrs/params.rs
index 13e588535..d313a6851 100644
--- a/rslib/src/scheduler/fsrs/params.rs
+++ b/rslib/src/scheduler/fsrs/params.rs
@@ -116,10 +116,10 @@ impl Collection {
         })?;
         progress_thread.join().ok();
         if let Ok(fsrs) = FSRS::new(Some(current_params)) {
-            let current_rmse = fsrs.evaluate(items.clone(), |_| true)?.rmse_bins;
+            let current_log_loss = fsrs.evaluate(items.clone(), |_| true)?.log_loss;
             let optimized_fsrs = FSRS::new(Some(&params))?;
-            let optimized_rmse = optimized_fsrs.evaluate(items.clone(), |_| true)?.rmse_bins;
-            if current_rmse <= optimized_rmse {
+            let optimized_log_loss = optimized_fsrs.evaluate(items.clone(), |_| true)?.log_loss;
+            if current_log_loss <= optimized_log_loss {
                 if num_of_relearning_steps <= 1 {
                     params = current_params.to_vec();
                 } else {
diff --git a/rslib/src/stats/card.rs b/rslib/src/stats/card.rs
index cdea5193e..dce38c56a 100644
--- a/rslib/src/stats/card.rs
+++ b/rslib/src/stats/card.rs
@@ -176,7 +176,7 @@ impl Collection {
             }
             Ok(result.into_iter().rev().collect())
         } else {
-            Ok(revlog.iter().map(stats_revlog_entry).collect())
+            Ok(revlog.iter().rev().map(stats_revlog_entry).collect())
         }
     }
 }
diff --git a/rslib/src/storage/sqlite.rs b/rslib/src/storage/sqlite.rs
index e7057946d..fb7066caf 100644
--- a/rslib/src/storage/sqlite.rs
+++ b/rslib/src/storage/sqlite.rs
@@ -384,10 +384,8 @@ fn add_extract_fsrs_relative_retrievability(db: &Connection) -> rusqlite::Result
                             .max(0.0001);
 
                         return Ok(Some(
-                            // power should be the reciprocal of the value of DECAY in FSRS-rs,
-                            // which is currently -0.5
-                            -(current_retrievability.powi(-2) - 1.)
-                                / (desired_retrievability.powi(-2) - 1.),
+                            -(current_retrievability.powf(-1.0 / decay) - 1.)
+                                / (desired_retrievability.powf(-1.0 / decay) - 1.),
                         ));
                     }
                 }