diff --git a/docs/api.md b/docs/api.md
index 74fc0a258..0cad9f88c 100644
--- a/docs/api.md
+++ b/docs/api.md
@@ -201,7 +201,7 @@ Following is the supported API format for specifying metrics aggregations:
                  groupByKeys: list of fields on which to aggregate
                  operationType: sum, min, max, count, avg or raw_values
                  operationKey: internal field on which to perform the operation
-                 timeInterval: time interval over which to perform the operation
+                 expiryTime: time interval over which to perform the operation (default: 2 minutes
 </pre>
 ## Connection tracking API
 Following is the supported API format for specifying connection tracking:
diff --git a/pkg/api/extract_aggregate.go b/pkg/api/extract_aggregate.go
index 749941130..0a9b2936a 100644
--- a/pkg/api/extract_aggregate.go
+++ b/pkg/api/extract_aggregate.go
@@ -31,5 +31,5 @@ type AggregateDefinition struct {
 	GroupByKeys   AggregateBy        `yaml:"groupByKeys,omitempty" json:"groupByKeys,omitempty" doc:"list of fields on which to aggregate"`
 	OperationType AggregateOperation `yaml:"operationType,omitempty" json:"operationType,omitempty" doc:"sum, min, max, count, avg or raw_values"`
 	OperationKey  string             `yaml:"operationKey,omitempty" json:"operationKey,omitempty" doc:"internal field on which to perform the operation"`
-	TimeInterval  Duration           `yaml:"timeInterval,omitempty" json:"timeInterval,omitempty" doc:"time interval over which to perform the operation"`
+	ExpiryTime    Duration           `yaml:"expiryTime,omitempty" json:"expiryTime,omitempty" doc:"time interval over which to perform the operation (default: 2 minutes"`
 }
diff --git a/pkg/config/pipeline_builder_test.go b/pkg/config/pipeline_builder_test.go
index dc7bb2d3c..3a78d09e5 100644
--- a/pkg/config/pipeline_builder_test.go
+++ b/pkg/config/pipeline_builder_test.go
@@ -119,7 +119,7 @@ func TestKafkaPromPipeline(t *testing.T) {
 		Name:          "src_as_connection_count",
 		GroupByKeys:   api.AggregateBy{"srcAS"},
 		OperationType: "count",
-		TimeInterval:  timeDuration,
+		ExpiryTime:    timeDuration,
 	}}})
 	var expiryTimeDuration api.Duration
 	expiryTimeDuration.Duration = time.Duration(50 * time.Second)
@@ -162,7 +162,7 @@ func TestKafkaPromPipeline(t *testing.T) {
 
 	b, err = json.Marshal(params[3])
 	require.NoError(t, err)
-	require.JSONEq(t, `{"name":"aggregate","extract":{"type":"aggregates","aggregates":{"defaultExpiryTime":"0s","rules":[{"name":"src_as_connection_count","groupByKeys":["srcAS"],"operationType":"count","timeInterval":"30s"}]}}}`, string(b))
+	require.JSONEq(t, `{"name":"aggregate","extract":{"type":"aggregates","aggregates":{"defaultExpiryTime":"0s","rules":[{"name":"src_as_connection_count","groupByKeys":["srcAS"],"operationType":"count","expiryTime":"30s"}]}}}`, string(b))
 
 	b, err = json.Marshal(params[4])
 	require.NoError(t, err)
diff --git a/pkg/pipeline/extract/aggregate/aggregates.go b/pkg/pipeline/extract/aggregate/aggregates.go
index 8e51129eb..775b90baf 100644
--- a/pkg/pipeline/extract/aggregate/aggregates.go
+++ b/pkg/pipeline/extract/aggregate/aggregates.go
@@ -59,7 +59,7 @@ func (aggregates *Aggregates) GetMetrics() []config.GenericMap {
 }
 
 func (aggregates *Aggregates) AddAggregate(aggregateDefinition api.AggregateDefinition) []Aggregate {
-	expiryTime := aggregateDefinition.TimeInterval
+	expiryTime := aggregateDefinition.ExpiryTime
 	if expiryTime.Duration == 0 {
 		expiryTime.Duration = defaultExpiryTime
 	}