diff --git a/internal/perfdata/collector.go b/internal/perfdata/collector.go
index 1267ba0471..c949b0e92c 100644
--- a/internal/perfdata/collector.go
+++ b/internal/perfdata/collector.go
@@ -315,9 +315,11 @@ func (c *Collector) Close() {
 	if c.collectCh != nil {
 		close(c.collectCh)
 	}
+
 	if c.counterValuesCh != nil {
 		close(c.counterValuesCh)
 	}
+
 	if c.errorCh != nil {
 		close(c.errorCh)
 	}
diff --git a/internal/utils/testutils/testutils.go b/internal/utils/testutils/testutils.go
index bd87ccd153..89ef9bf44a 100644
--- a/internal/utils/testutils/testutils.go
+++ b/internal/utils/testutils/testutils.go
@@ -21,7 +21,6 @@ import (
 	"log/slog"
 	"os"
 	"sync"
-	"syscall"
 	"testing"
 	"time"
 
@@ -32,6 +31,7 @@ import (
 	"github.com/prometheus-community/windows_exporter/pkg/collector"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/stretchr/testify/require"
+	"golang.org/x/sys/windows"
 )
 
 func FuncBenchmarkCollector[C collector.Collector](b *testing.B, name string, collectFunc collector.BuilderWithFlags[C]) {
@@ -92,6 +92,7 @@ func TestCollector[C collector.Collector, V interface{}](t *testing.T, fn func(*
 	}()
 
 	err = c.Build(logger, miSession)
+
 	switch {
 	case err == nil:
 	case errors.Is(err, mi.MI_RESULT_INVALID_NAMESPACE),
@@ -108,7 +109,7 @@ func TestCollector[C collector.Collector, V interface{}](t *testing.T, fn func(*
 
 	switch {
 	// container collector
-	case errors.Is(err, syscall.Errno(2151088411)),
+	case errors.Is(err, windows.Errno(2151088411)),
 		errors.Is(err, perfdata.ErrPerformanceCounterNotInitialized),
 		errors.Is(err, perfdata.ErrNoData),
 		errors.Is(err, mi.MI_RESULT_INVALID_NAMESPACE),