diff --git a/kernel/api/repo.go b/kernel/api/repo.go
index 256908ad8..84bf860bb 100644
--- a/kernel/api/repo.go
+++ b/kernel/api/repo.go
@@ -70,7 +70,10 @@ func diffRepoSnapshots(c *gin.Context) {
 	}
 
 	ret.Data = map[string]interface{}{
-		"diff": diff,
+		"addsLeft":     diff.AddsLeft,
+		"updatesLeft":  diff.UpdatesLeft,
+		"updatesRight": diff.UpdatesRight,
+		"removesRight": diff.RemovesRight,
 	}
 }
 
diff --git a/kernel/model/repository.go b/kernel/model/repository.go
index 3620edad4..ff2f8b77c 100644
--- a/kernel/model/repository.go
+++ b/kernel/model/repository.go
@@ -128,10 +128,10 @@ func OpenRepoSnapshotDoc(fileID string) (id, rootID, content string, isLargeDoc
 }
 
 type LeftRightDiff struct {
-	AddsLeft     []*DiffFile
-	UpdatesLeft  []*DiffFile
-	UpdatesRight []*DiffFile
-	RemovesRight []*DiffFile
+	AddsLeft     []*DiffFile `json:"addsLeft"`
+	UpdatesLeft  []*DiffFile `json:"updatesLeft"`
+	UpdatesRight []*DiffFile `json:"updatesRight"`
+	RemovesRight []*DiffFile `json:"removesRight"`
 }
 
 type DiffFile struct {