diff --git a/src/fiber/graph.rs b/src/fiber/graph.rs
index aa5aba6a8..a61c972bb 100644
--- a/src/fiber/graph.rs
+++ b/src/fiber/graph.rs
@@ -205,8 +205,7 @@ where
     }
 
     pub(crate) fn load_from_store(&mut self) {
-        let channels = self.store.get_channels(None);
-        for channel in channels.iter() {
+        for channel in self.store.get_channels(None).iter() {
             if self.best_height < channel.funding_tx_block_number() {
                 self.best_height = channel.funding_tx_block_number();
             }
diff --git a/src/rpc/README.md b/src/rpc/README.md
index cc56aa809..9f140e95d 100644
--- a/src/rpc/README.md
+++ b/src/rpc/README.md
@@ -621,8 +621,8 @@ The Channel information.
 * `funding_tx_index` - u32, The index of the funding transaction.
 * `node1` - Pubkey, The node ID of the first node.
 * `node2` - Pubkey, The node ID of the second node.
-* `last_updated_timestamp` - `Option<u64>`, The last updated timestamp of the channel.
-* `created_timestamp` - u64, The created timestamp of the channel.
+* `last_updated_timestamp` - `Option<u64>`, The last updated timestamp of the channel, milliseconds since UNIX epoch.
+* `created_timestamp` - u64, The created timestamp of the channel, milliseconds since UNIX epoch.
 * `node1_to_node2_fee_rate` - `Option<u64>`, The fee rate from node 1 to node 2.
 * `node2_to_node1_fee_rate` - `Option<u64>`, The fee rate from node 2 to node 1.
 * `capacity` - u128, The capacity of the channel.
diff --git a/src/rpc/graph.rs b/src/rpc/graph.rs
index 8d0f4eefb..376c2877a 100644
--- a/src/rpc/graph.rs
+++ b/src/rpc/graph.rs
@@ -154,10 +154,11 @@ struct ChannelInfo {
     node1: Pubkey,
     /// The node ID of the second node.
     node2: Pubkey,
-    /// The last updated timestamp of the channel.
+    /// The last updated timestamp of the channel, milliseconds since UNIX epoch.
     #[serde_as(as = "Option<U64Hex>")]
     last_updated_timestamp: Option<u64>,
-    /// The created timestamp of the channel.
+    /// The created timestamp of the channel, milliseconds since UNIX epoch.
+    #[serde_as(as = "U64Hex")]
     created_timestamp: u64,
     #[serde_as(as = "Option<U64Hex>")]
     /// The fee rate from node 1 to node 2.