diff --git a/apis/swagger.yml b/apis/swagger.yml
index a7e8d91bd..7e3e28fd4 100644
--- a/apis/swagger.yml
+++ b/apis/swagger.yml
@@ -1263,7 +1263,7 @@ definitions:
       dstIP:
         type: "string"
         description: |
-          the peer ID of the target Peer.
+          the peer IP of the target Peer.
       range:
         type: "string"
         description: |
diff --git a/apis/types/piece_error_request.go b/apis/types/piece_error_request.go
index 380db1009..b98774e9b 100644
--- a/apis/types/piece_error_request.go
+++ b/apis/types/piece_error_request.go
@@ -19,7 +19,7 @@ import (
 // swagger:model PieceErrorRequest
 type PieceErrorRequest struct {
 
-	// the peer ID of the target Peer.
+	// the peer IP of the target Peer.
 	//
 	DstIP string `json:"dstIP,omitempty"`
 
diff --git a/docs/api_reference/apis.md b/docs/api_reference/apis.md
index c8b44181d..3fed0fdfb 100644
--- a/docs/api_reference/apis.md
+++ b/docs/api_reference/apis.md
@@ -981,7 +981,7 @@ Peer's detailed information in supernode.
 
 |Name|Description|Schema|
 |---|---|---|
-|**dstIP**  <br>*optional*|the peer ID of the target Peer.|string|
+|**dstIP**  <br>*optional*|the peer IP of the target Peer.|string|
 |**dstPid**  <br>*optional*|the peer ID of the target Peer.|string|
 |**errorType**  <br>*optional*|the error type when failed to download from supernode that dfget will report to supernode|enum (FILE_NOT_EXIST, FILE_MD5_NOT_MATCH)|
 |**expectedMd5**  <br>*optional*|the MD5 value of piece which returned by the supernode that<br>in order to verify the correctness of the piece content which<br>downloaded from the other peers.|string|