diff --git a/pkg/rule/api/v1_test.go b/pkg/rule/api/v1_test.go
index 58d2c3d3c4..759f052474 100644
--- a/pkg/rule/api/v1_test.go
+++ b/pkg/rule/api/v1_test.go
@@ -272,7 +272,7 @@ func testEndpoints(t *testing.T, api *API) {
 				testutil.Ok(t, err)
 				got, err := json.Marshal(test.response)
 				testutil.Ok(t, err)
-				testutil.Equals(t, exp, got)
+				testutil.Equals(t, string(exp), string(got))
 			})
 		}
 	}
diff --git a/pkg/store/storepb/rules.pb.go b/pkg/store/storepb/rules.pb.go
index 9bebd503e2..4519bea32b 100644
--- a/pkg/store/storepb/rules.pb.go
+++ b/pkg/store/storepb/rules.pb.go
@@ -336,7 +336,7 @@ var xxx_messageInfo_Alert proto.InternalMessageInfo
 type RecordingRule struct {
 	Name                      string      `protobuf:"bytes,1,opt,name=name,proto3" json:"name"`
 	Query                     string      `protobuf:"bytes,2,opt,name=query,proto3" json:"query"`
-	Labels                    *PromLabels `protobuf:"bytes,3,opt,name=labels,proto3" json:"labels,omitempty"`
+	Labels                    *PromLabels `protobuf:"bytes,3,opt,name=labels,proto3" json:"labels"`
 	Health                    string      `protobuf:"bytes,4,opt,name=health,proto3" json:"health"`
 	LastError                 string      `protobuf:"bytes,5,opt,name=last_error,json=lastError,proto3" json:"lastError,omitempty"`
 	EvaluationDurationSeconds float64     `protobuf:"fixed64,6,opt,name=evaluation_duration_seconds,json=evaluationDurationSeconds,proto3" json:"evaluationTime"`
@@ -427,63 +427,62 @@ func init() {
 func init() { proto.RegisterFile("rules.proto", fileDescriptor_8e722d3e922f0937) }
 
 var fileDescriptor_8e722d3e922f0937 = []byte{
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+	0xfe, 0xb8, 0xe8, 0xe5, 0x17, 0x7b, 0x00, 0x95, 0x6f, 0xa0, 0x75, 0x68, 0x0d, 0x8f, 0xf6, 0x9f,
+	0x9d, 0x0c, 0xbf, 0x3f, 0xdc, 0xaa, 0x21, 0x07, 0x9a, 0x2f, 0x0f, 0x8f, 0x0e, 0x86, 0x47, 0xcf,
+	0xb7, 0x0c, 0x04, 0x60, 0x7d, 0x3b, 0xc4, 0xd9, 0x78, 0xcd, 0x7f, 0x74, 0xf9, 0x67, 0xbb, 0x76,
+	0x79, 0xd5, 0x36, 0xde, 0x5c, 0xb5, 0x8d, 0x3f, 0xae, 0xda, 0xc6, 0xeb, 0xeb, 0x76, 0xed, 0xcd,
+	0x75, 0xbb, 0xf6, 0xeb, 0x75, 0xbb, 0xf6, 0x43, 0x53, 0x48, 0xc6, 0x69, 0x7c, 0x7a, 0x6a, 0xa9,
+	0x63, 0xed, 0xfd, 0x1d, 0x00, 0x00, 0xff, 0xff, 0x7e, 0x9e, 0x97, 0xda, 0xdc, 0x09, 0x00, 0x00,
 }
 
 func (m *RuleGroups) Marshal() (dAtA []byte, err error) {
diff --git a/pkg/store/storepb/rules.proto b/pkg/store/storepb/rules.proto
index e4512ba330..b3000062a0 100644
--- a/pkg/store/storepb/rules.proto
+++ b/pkg/store/storepb/rules.proto
@@ -98,7 +98,7 @@ message Alert {
 message RecordingRule {
   string name                               = 1 [(gogoproto.jsontag) = "name" ];
   string query                              = 2 [(gogoproto.jsontag) = "query" ];
-  PromLabels labels                         = 3 [(gogoproto.jsontag) = "labels,omitempty" ];
+  PromLabels labels                         = 3 [(gogoproto.jsontag) = "labels" ];
   string health                             = 4 [(gogoproto.jsontag) = "health" ];
   string last_error                         = 5 [(gogoproto.jsontag) = "lastError,omitempty" ];
   double evaluation_duration_seconds        = 6 [(gogoproto.jsontag) = "evaluationTime" ];
diff --git a/pkg/testutil/testpromcompatibility/api_compatibility.go b/pkg/testutil/testpromcompatibility/api_compatibility.go
index fb9c5339e8..a42b28dda5 100644
--- a/pkg/testutil/testpromcompatibility/api_compatibility.go
+++ b/pkg/testutil/testpromcompatibility/api_compatibility.go
@@ -64,7 +64,7 @@ type AlertingRule struct {
 type RecordingRule struct {
 	Name           string           `json:"name"`
 	Query          string           `json:"query"`
-	Labels         labels.Labels    `json:"labels,omitempty"`
+	Labels         labels.Labels    `json:"labels"`
 	Health         rules.RuleHealth `json:"health"`
 	LastError      string           `json:"lastError,omitempty"`
 	EvaluationTime float64          `json:"evaluationTime"`