diff --git a/rust/src/plant_state.rs b/rust/src/plant_state.rs
index 26c7288..612d32f 100644
--- a/rust/src/plant_state.rs
+++ b/rust/src/plant_state.rs
@@ -12,10 +12,11 @@ const MOIST_SENSOR_MAX_FREQUENCY: f32 = 7500.; // 60kHz (500Hz margin)
 const MOIST_SENSOR_MIN_FREQUENCY: f32 = 150.; // this is really, really dry, think like cactus levels
 
 #[derive(Debug, PartialEq, Serialize)]
+#[serde(tag = "kind")]
 pub enum MoistureSensorError {
     ShortCircuit { hz: f32, max: f32 },
     OpenLoop { hz: f32, min: f32 },
-    BoardError(String),
+    BoardError { message: String },
 }
 
 #[derive(Debug, PartialEq, Serialize)]
@@ -49,6 +50,7 @@ impl MoistureSensorState {
 impl MoistureSensorState {}
 
 #[derive(Debug, PartialEq, Serialize)]
+#[serde(tag = "kind")]
 pub enum PumpError {
     PumpNotWorking {
         failed_attempts: usize,
@@ -134,9 +136,9 @@ impl PlantState {
                     },
                     Err(err) => MoistureSensorState::SensorError(err),
                 },
-                Err(err) => MoistureSensorState::SensorError(MoistureSensorError::BoardError(
-                    err.to_string(),
-                )),
+                Err(err) => MoistureSensorState::SensorError(MoistureSensorError::BoardError {
+                    message: err.to_string(),
+                })
             }
         } else {
             MoistureSensorState::Disabled
@@ -159,9 +161,9 @@ impl PlantState {
                     },
                     Err(err) => MoistureSensorState::SensorError(err),
                 },
-                Err(err) => MoistureSensorState::SensorError(MoistureSensorError::BoardError(
-                    err.to_string(),
-                )),
+                Err(err) => MoistureSensorState::SensorError(MoistureSensorError::BoardError {
+                    message: err.to_string(),
+                })
             }
         } else {
             MoistureSensorState::Disabled