diff --git a/main.go b/main.go
index a974184..074dd30 100644
--- a/main.go
+++ b/main.go
@@ -5,5 +5,5 @@ import "git.cryptic.systems/volker.raschek/civ/cmd"
 var version string
 
 func main() {
-	cmd.Execute(version)
+	_ = cmd.Execute(version)
 }
diff --git a/pkg/config/config.go b/pkg/config/config.go
index 2fed2f6..5763c87 100644
--- a/pkg/config/config.go
+++ b/pkg/config/config.go
@@ -65,7 +65,7 @@ func (jr *JSONReader) ReadFile() (*domain.Config, error) {
 	if err != nil {
 		return nil, err
 	}
-	defer f.Close()
+	defer func() { _ = f.Close() }()
 
 	return jr.read(f)
 }
@@ -79,7 +79,7 @@ func (jw *JSONWriter) WriteFile(config *domain.Config) error {
 	if err != nil {
 		return err
 	}
-	defer func() { f.Close() }()
+	defer func() { _ = f.Close() }()
 	return jw.write(f, config)
 }
 
@@ -103,7 +103,7 @@ func (yr *YAMLReader) ReadFile() (*domain.Config, error) {
 	if err != nil {
 		return nil, err
 	}
-	defer f.Close()
+	defer func() { _ = f.Close() }()
 
 	return yr.read(f)
 }
@@ -129,7 +129,7 @@ func (yw *YAMLWriter) WriteFile(config *domain.Config) error {
 	if err != nil {
 		return err
 	}
-	defer func() { f.Close() }()
+	defer func() { _ = f.Close() }()
 	return yw.write(f, config)
 }
 
diff --git a/pkg/usecases/verifyLabels.go b/pkg/usecases/verifyLabels.go
index 31c9fc7..c00187c 100644
--- a/pkg/usecases/verifyLabels.go
+++ b/pkg/usecases/verifyLabels.go
@@ -14,8 +14,8 @@ import (
 // ContainerRuntime is an interface for different container runtimes to return labels
 // based on their full qualified container image name. For example:
 //
-//   imageLabels, err := Load(ctx, "docker.io/library/alpine:latest")
-//   imageLabels, err := Load(ctx, "docker.io/library/busybox:latest")
+//	imageLabels, err := Load(ctx, "docker.io/library/alpine:latest")
+//	imageLabels, err := Load(ctx, "docker.io/library/busybox:latest")
 type ContainerRuntime interface {
 	GetImageLabels(ctx context.Context, name string) (map[string]string, error)
 }
@@ -182,7 +182,7 @@ func labelCompareSemver(compareSemver *domain.LabelConstraintCompareSemver, pars
 }
 
 func labelCompareString(compareString *domain.LabelConstraintCompareString, labelValue string) bool {
-	var majorState bool = true
+	var majorState = true
 
 	// Equal
 	if compareString.Equal != "" {
@@ -224,7 +224,7 @@ func labelCompareString(compareString *domain.LabelConstraintCompareString, labe
 }
 
 func labelCount(re *regexp.Regexp, labelConstraintCounter *domain.LabelConstraintCounter, labels map[string]string) bool {
-	var majorState bool = true
+	var majorState = true
 
 	var i uint = 0
 	for key := range labels {