diff --git a/main.go b/main.go
index 98ead52..10f0465 100644
--- a/main.go
+++ b/main.go
@@ -29,6 +29,6 @@ func main() {
 			log.Error("can't create omq-memory.pprof", "error", err)
 		}
 		_ = pprof.WriteHeapProfile(memFile)
-		defer memFile.Close()
+		defer func() { _ = memFile.Close() }()
 	}
 }
diff --git a/pkg/amqp10_client/publisher.go b/pkg/amqp10_client/publisher.go
index 7204504..b726db3 100644
--- a/pkg/amqp10_client/publisher.go
+++ b/pkg/amqp10_client/publisher.go
@@ -150,5 +150,5 @@ func (p Amqp10Publisher) Send() {
 
 func (p Amqp10Publisher) Stop(reason string) {
 	log.Debug("closing connection", "protocol", "amqp-1.0", "publisherId", p.Id, "reason", reason)
-	p.Connectionection.Close()
+	_ = p.Connectionection.Close()
 }
diff --git a/pkg/common/common.go b/pkg/common/common.go
index c6207bf..f35572c 100644
--- a/pkg/common/common.go
+++ b/pkg/common/common.go
@@ -31,24 +31,24 @@ func NewPublisher(protocol Protocol, cfg config.Config, id int) (Publisher, erro
 	case AMQP:
 		p := amqp10_client.NewPublisher(cfg, id)
 		if p == nil {
-			return nil, fmt.Errorf("Failed to create an AMQP-1.0 publisher")
+			return nil, fmt.Errorf("failed to create an AMQP-1.0 publisher")
 		}
 		return p, nil
 	case STOMP:
 		p := stomp_client.NewPublisher(cfg, id)
 		if p == nil {
-			return nil, fmt.Errorf("Failed to create a STOMP publisher")
+			return nil, fmt.Errorf("failed to create a STOMP publisher")
 		}
 		return p, nil
 	case MQTT:
 		p := mqtt_client.NewPublisher(cfg, id)
 		if p == nil {
-			return nil, fmt.Errorf("Failed to create an MQTT publisher")
+			return nil, fmt.Errorf("failed to create an MQTT publisher")
 		}
 		return p, nil
 	}
 
-	return nil, fmt.Errorf("Unknown protocol")
+	return nil, fmt.Errorf("unknown protocol")
 }
 
 func NewConsumer(protocol Protocol, cfg config.Config, id int) (Consumer, error) {
@@ -56,22 +56,22 @@ func NewConsumer(protocol Protocol, cfg config.Config, id int) (Consumer, error)
 	case AMQP:
 		c := amqp10_client.NewConsumer(cfg, id)
 		if c == nil {
-			return nil, fmt.Errorf("Failed to create an AMQP-1.0 consumer")
+			return nil, fmt.Errorf("failed to create an AMQP-1.0 consumer")
 		}
 		return c, nil
 	case STOMP:
 		c := stomp_client.NewConsumer(cfg, id)
 		if c == nil {
-			return nil, fmt.Errorf("Failed to create an AMQP-1.0 consumer")
+			return nil, fmt.Errorf("failed to create an AMQP-1.0 consumer")
 		}
 		return c, nil
 	case MQTT:
 		c := mqtt_client.NewConsumer(cfg, id)
 		if c == nil {
-			return nil, fmt.Errorf("Failed to create an AMQP-1.0 consumer")
+			return nil, fmt.Errorf("failed to create an AMQP-1.0 consumer")
 		}
 		return c, nil
 	}
 
-	return nil, fmt.Errorf("Unknown protocol")
+	return nil, fmt.Errorf("unknown protocol")
 }
diff --git a/pkg/metrics/metrics.go b/pkg/metrics/metrics.go
index 10dcaa2..abf1fdd 100644
--- a/pkg/metrics/metrics.go
+++ b/pkg/metrics/metrics.go
@@ -124,7 +124,7 @@ func (m MetricsServer) PrintMetrics() {
 		log.Error("Error getting metrics", "error", err)
 		return
 	}
-	defer resp.Body.Close()
+	defer func() { _ = resp.Body.Close() }()
 
 	body, err := io.ReadAll(resp.Body)
 	if err != nil {