diff --git a/crates/loro-core/examples/encoding.rs b/crates/loro-core/examples/encoding.rs
index 8659c3aa..95947e59 100644
--- a/crates/loro-core/examples/encoding.rs
+++ b/crates/loro-core/examples/encoding.rs
@@ -41,7 +41,7 @@ fn main() {
     let start = Instant::now();
     let buf = loro
         .encode(EncodeConfig::new(
-            EncodeMode::Changes(VersionVector::new()),
+            EncodeMode::RleUpdates(VersionVector::new()),
             None,
         ))
         .unwrap();
@@ -67,7 +67,7 @@ fn main() {
     println!("decode changes used {}ms", start.elapsed().as_millis());
     let buf2 = loro
         .encode(EncodeConfig::new(
-            EncodeMode::Changes(VersionVector::new()),
+            EncodeMode::RleUpdates(VersionVector::new()),
             None,
         ))
         .unwrap();
diff --git a/crates/loro-core/src/fuzz.rs b/crates/loro-core/src/fuzz.rs
index f99921d3..473ef62a 100644
--- a/crates/loro-core/src/fuzz.rs
+++ b/crates/loro-core/src/fuzz.rs
@@ -316,16 +316,16 @@ pub fn test_single_client_encode(mut actions: Vec<Action>) {
     }
     let encode_bytes = store
         .encode(EncodeConfig::new(
-            EncodeMode::Changes(VersionVector::new()),
+            EncodeMode::RleUpdates(VersionVector::new()),
             None,
         ))
         .unwrap();
     let json1 = store.to_json();
     let mut store2 = LoroCore::new(Default::default(), None);
-    store2.decode(&encode_bytes);
+    store2.decode(&encode_bytes).unwrap();
     let _encode_bytes2 = store2
         .encode(EncodeConfig::new(
-            EncodeMode::Changes(VersionVector::new()),
+            EncodeMode::RleUpdates(VersionVector::new()),
             None,
         ))
         .unwrap();
diff --git a/crates/loro-core/src/log_store/encoding.rs b/crates/loro-core/src/log_store/encoding.rs
index 6e6085e3..72268b5e 100644
--- a/crates/loro-core/src/log_store/encoding.rs
+++ b/crates/loro-core/src/log_store/encoding.rs
@@ -14,7 +14,7 @@ const MAGIC_BYTES: [u8; 4] = [0x6c, 0x6f, 0x72, 0x6f];
 pub enum EncodeMode {
     Auto(Option<VersionVector>),
     Updates(VersionVector),
-    Changes(VersionVector),
+    RleUpdates(VersionVector),
     Snapshot,
 }
 
@@ -72,7 +72,7 @@ impl LoroEncoder {
                     let self_vv = store.vv();
                     let diff = self_vv.diff(&vv);
                     if diff.left.len() > UPDATE_ENCODE_THRESHOLD {
-                        EncodeMode::Changes(vv)
+                        EncodeMode::RleUpdates(vv)
                     } else {
                         EncodeMode::Updates(vv)
                     }
@@ -84,7 +84,7 @@ impl LoroEncoder {
         };
         let encoded = match &mode {
             EncodeMode::Updates(vv) => Self::encode_updates(&store, vv),
-            EncodeMode::Changes(vv) => Self::encode_changes(&store, vv),
+            EncodeMode::RleUpdates(vv) => Self::encode_changes(&store, vv),
             EncodeMode::Snapshot => Self::encode_snapshot(&store),
             _ => unreachable!(),
         }?;
@@ -170,7 +170,7 @@ impl EncodeMode {
         match self {
             EncodeMode::Auto(_) => unreachable!(),
             EncodeMode::Updates(_) => 0,
-            EncodeMode::Changes(_) => 1,
+            EncodeMode::RleUpdates(_) => 1,
             EncodeMode::Snapshot => 2,
         }
     }