diff --git a/database/influxdb/node.go b/database/influxdb/node.go
index 73e3dee9..26f41021 100644
--- a/database/influxdb/node.go
+++ b/database/influxdb/node.go
@@ -2,6 +2,7 @@ package influxdb
 
 import (
 	"fmt"
+	"log"
 	"strconv"
 	"time"
 
@@ -15,7 +16,9 @@ import (
 func (conn *Connection) PruneNodes(deleteAfter time.Duration) {
 	for _, measurement := range []string{MeasurementNode, MeasurementLink} {
 		query := fmt.Sprintf("delete from %s where time < now() - %ds", measurement, deleteAfter/time.Second)
-		conn.client.Query(client.NewQuery(query, conn.config.Database(), "m"))
+		if _, err := conn.client.Query(client.NewQuery(query, conn.config.Database(), "m")); err != nil {
+			log.Println(err)
+		}
 	}
 
 }
diff --git a/output/geojson/geojson_test.go b/output/geojson/geojson_test.go
index b73196bc..b9a1382f 100644
--- a/output/geojson/geojson_test.go
+++ b/output/geojson/geojson_test.go
@@ -9,11 +9,6 @@ import (
 	"github.com/FreifunkBremen/yanic/runtime"
 )
 
-const (
-	testNodeDescription string = "Online\nClients: 42\nModel: TP-Link 841\n" +
-		"Site: mysite\nDomain: domain_42\n"
-)
-
 func TestTransform(t *testing.T) {
 	testNodes := createTestNodes()
 	nodes := transform(testNodes)
@@ -41,7 +36,7 @@ func TestTransform(t *testing.T) {
 		nodePoint.Properties["clients"],
 	)
 	assert.Equal(
-		testNodeDescription,
+		"Online\nClients: 42\nModel: TP-Link 841\nSite: mysite\nDomain: domain_42\n",
 		nodePoint.Properties["description"],
 	)
 }
diff --git a/output/raw-jsonl/raw_jsonl_test.go b/output/raw-jsonl/raw_jsonl_test.go
index 2ea6aed8..190939e7 100644
--- a/output/raw-jsonl/raw_jsonl_test.go
+++ b/output/raw-jsonl/raw_jsonl_test.go
@@ -9,11 +9,6 @@ import (
 	"github.com/FreifunkBremen/yanic/runtime"
 )
 
-const (
-	testNodeDescription string = "Online\nClients: 42\nModel: TP-Link 841\n" +
-		"Site: mysite\nDomain: domain_42\n"
-)
-
 func TestTransform(t *testing.T) {
 	testNodes := createTestNodes()
 	result := transform(testNodes)
diff --git a/runtime/nodes_test.go b/runtime/nodes_test.go
index a6c6c1d6..e572840c 100644
--- a/runtime/nodes_test.go
+++ b/runtime/nodes_test.go
@@ -135,7 +135,7 @@ func TestSelectNodes(t *testing.T) {
 	})
 	assert.Len(selectedNodes, 1)
 	time := jsontime.Time{}
-	time.UnmarshalJSON([]byte("2017-03-10T12:12:01"))
+	assert.NoError(time.UnmarshalJSON([]byte("\"2017-03-10T12:12:01\"")))
 	assert.Equal(time, selectedNodes[0].Firstseen)
 }