diff --git a/CHANGELOG.md b/CHANGELOG.md
index e90aaf1325..a4b2cde109 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@ We use *breaking :warning:* to mark changes that are not backward compatible (re
 
 ### Fixed
 - [#5502](https://github.com/thanos-io/thanos/pull/5502) Receive: Handle exemplar storage errors as conflict error.
+- [#5534](https://github.com/thanos-io/thanos/pull/5534) Query: Set struct return by query api alerts same as prometheus api
 
 ### Added
 
diff --git a/pkg/api/query/v1.go b/pkg/api/query/v1.go
index 7a8fbf5fca..fbc9a18169 100644
--- a/pkg/api/query/v1.go
+++ b/pkg/api/query/v1.go
@@ -794,7 +794,9 @@ func NewAlertsHandler(client rules.UnaryClient, enablePartialResponse bool) func
 			return nil, nil, &api.ApiError{Typ: api.ErrorInternal, Err: errors.Errorf("error retrieving rules: %v", err)}
 		}
 
-		var resp struct{ Alerts []*rulespb.AlertInstance }
+		var resp struct {
+			Alerts []*rulespb.AlertInstance `json:"alerts"`
+		}
 		for _, g := range groups.Groups {
 			for _, r := range g.Rules {
 				a := r.GetAlert()