diff --git a/src/satman/src/main.rs b/src/satman/src/main.rs
index 278e597..fd3bdc6 100644
--- a/src/satman/src/main.rs
+++ b/src/satman/src/main.rs
@@ -1218,9 +1218,7 @@ fn process_aux_packet(
                 core_manager.clear_data();
             }
 
-            drtioaux::send(0, &drtioaux::Packet::CoreMgmtAck { succeeded: succeeded })?;
-
-            Ok(())
+            drtioaux::send(0, &drtioaux::Packet::CoreMgmtAck { succeeded: succeeded })
         }
         drtioaux::Packet::CoreMgmtConfigRemoveRequest {
             destination: _destination,
diff --git a/src/satman/src/mgmt.rs b/src/satman/src/mgmt.rs
index 340784a..b0ec690 100644
--- a/src/satman/src/mgmt.rs
+++ b/src/satman/src/mgmt.rs
@@ -21,7 +21,7 @@ pub fn byte_to_level_filter(level_byte: u8) -> Result<log::LevelFilter> {
         lv => {
             error!("unknown log level: {}", lv);
             return Err(());
-        },
+        }
     })
 }
 
@@ -70,14 +70,13 @@ impl<'a> Manager<'_> {
     }
 
     pub fn fetch_config_value(&mut self, key: &str) -> Result<()> {
-        self.cfg.read(&key)
+        self.cfg
+            .read(&key)
             .map(|value| {
                 debug!("got value");
                 self.last_value = Sliceable::new(0, value)
             })
-            .map_err(|_| {
-                warn!("read error: no such key")
-            })
+            .map_err(|_| warn!("read error: no such key"))
     }
 
     pub fn get_config_value_slice(&mut self, data_slice: &mut [u8; CORE_MGMT_PAYLOAD_MAX_SIZE]) -> SliceMeta {
@@ -94,18 +93,22 @@ impl<'a> Manager<'_> {
     }
 
     pub fn write_config(&mut self) -> Result<()> {
-        let key = self.current_payload.read_string().map_err(
-            |_err| error!("error on reading key"))?;
+        let key = self
+            .current_payload
+            .read_string()
+            .map_err(|_err| error!("error on reading key"))?;
         let value = self.current_payload.read_bytes().unwrap();
 
-        self.cfg.write(&key, value)
+        self.cfg
+            .write(&key, value)
             .map(|()| debug!("write success"))
             .map_err(|err| error!("failed to write: {:?}", err))
     }
 
     pub fn remove_config(&mut self, key: &str) -> Result<()> {
         debug!("erase key: {}", key);
-        self.cfg.remove(&key)
+        self.cfg
+            .remove(&key)
             .map(|()| debug!("erase success"))
             .map_err(|err| warn!("failed to erase: {:?}", err))
     }