diff --git a/cmd/alertmanager/main_test.go b/cmd/alertmanager/main_test.go
index af45316b36..8939853608 100644
--- a/cmd/alertmanager/main_test.go
+++ b/cmd/alertmanager/main_test.go
@@ -21,10 +21,6 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-type sendResolved bool
-
-func (s sendResolved) SendResolved() bool { return bool(s) }
-
 func TestExternalURL(t *testing.T) {
 	hostname := "foo"
 	for _, tc := range []struct {
diff --git a/notify/receiver/receiver.go b/notify/receiver/receiver.go
index 70eb5352a2..cf7e23b5a0 100644
--- a/notify/receiver/receiver.go
+++ b/notify/receiver/receiver.go
@@ -16,6 +16,8 @@ package receiver
 import (
 	"github.com/go-kit/log"
 
+	commoncfg "github.com/prometheus/common/config"
+
 	"github.com/prometheus/alertmanager/config"
 	"github.com/prometheus/alertmanager/notify"
 	"github.com/prometheus/alertmanager/notify/discord"
@@ -33,12 +35,11 @@ import (
 	"github.com/prometheus/alertmanager/notify/wechat"
 	"github.com/prometheus/alertmanager/template"
 	"github.com/prometheus/alertmanager/types"
-	commoncfg "github.com/prometheus/common/config"
 )
 
 type Wrapper func(string, notify.Notifier) notify.Notifier
 
-var NoWrap Wrapper = nil
+var NoWrap Wrapper
 
 // BuildReceiverIntegrations builds a list of integration notifiers off of a
 // receiver config.
diff --git a/notify/receiver/receiver_test.go b/notify/receiver/receiver_test.go
index b47322fff5..c282de5897 100644
--- a/notify/receiver/receiver_test.go
+++ b/notify/receiver/receiver_test.go
@@ -89,7 +89,7 @@ func TestBuildReceiverIntegrations(t *testing.T) {
 	t.Run("invokes notifier wrapper func", func(t *testing.T) {
 		calls := 0
 		wrap := func(_ string, n notify.Notifier) notify.Notifier {
-			calls += 1
+			calls++
 			return n
 		}
 		cfg := config.Receiver{