diff --git a/Cargo.toml b/Cargo.toml
index a18e217..a7523ed 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,7 +14,7 @@ serde = { version = "1", features = ["derive"] }
 serde_json = { version = "1" }
 prost = { version = "0" }
 
-beteran-protobuf-rust = { git = "https://gitlab.loafle.net/bet/beteran-protobuf-rust.git", tag = "v0.1.20-snapshot" }
+beteran-protobuf-rust = { git = "https://gitlab.loafle.net/bet/beteran-protobuf-rust.git", tag = "v0.1.21-snapshot" }
 
 
 [build-dependencies]
diff --git a/src/error/rpc.rs b/src/error/rpc.rs
index 249a1d5..b8bca06 100644
--- a/src/error/rpc.rs
+++ b/src/error/rpc.rs
@@ -168,31 +168,19 @@ impl From<&InvalidParamsDetail> for bpr::protobuf::rpc::InvalidParamsDetail {
 #[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
 pub struct InvalidParams {
   pub message: String,
-  pub details: Vec<InvalidParamsDetail>,
+  pub detail: InvalidParamsDetail,
 }
 
 impl fmt::Display for InvalidParams {
   fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
     write!(
       f,
-      "Invalid Params error, message: {}, details: {:?}",
-      self.message, self.details
+      "Invalid Params error, message: {}, detail: {:?}",
+      self.message, self.detail
     )
   }
 }
 
-impl From<InvalidParams> for bpr::protobuf::rpc::InvalidParams {
-  fn from(p: InvalidParams) -> Self {
-    bpr::protobuf::rpc::InvalidParams {
-      details: p
-        .details
-        .iter()
-        .map(bpr::protobuf::rpc::InvalidParamsDetail::from)
-        .collect(),
-    }
-  }
-}
-
 #[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
 pub struct Internal {
   pub message: String,
@@ -270,7 +258,7 @@ impl From<Error> for bpr::protobuf::rpc::Error {
       Error::InvalidParams(e) => bpr::protobuf::rpc::Error {
         code: -32602,
         message: e.message.clone(),
-        data: Some(bpr::protobuf::rpc::InvalidParams::from(e).encode_to_vec()),
+        data: Some(bpr::protobuf::rpc::InvalidParamsDetail::from(&e.detail).encode_to_vec()),
       },
       Error::Internal(e) => bpr::protobuf::rpc::Error {
         code: -32603,