diff --git a/internal/oci/oci_linux.go b/internal/oci/oci_linux.go
index a642c722616..ad9a19fb39c 100644
--- a/internal/oci/oci_linux.go
+++ b/internal/oci/oci_linux.go
@@ -6,6 +6,7 @@ import (
 	"bufio"
 	"fmt"
 	"os"
+	"path/filepath"
 	"strconv"
 	"strings"
 	"syscall"
@@ -88,13 +89,13 @@ func (r *runtimeOCI) containerStats(ctr *Container, cgroup string) (*ContainerSt
 		stats.NetInput, stats.NetOutput = getContainerNetIO(netNsPath)
 	}
 
-	totalInactiveFile, err := getTotalInactiveFile()
+	totalInactiveFile, err := getTotalInactiveFile(cgroupPath)
 	if err != nil { // nolint: gocritic
 		logrus.Warnf("error in memory working set stats retrieval: %v", err)
 	} else if stats.MemUsage > totalInactiveFile {
 		stats.WorkingSetBytes = stats.MemUsage - totalInactiveFile
 	} else {
-		logrus.Debugf(
+		logrus.Warnf(
 			"unable to account working set stats: total_inactive_file (%d) > memory usage (%d)",
 			totalInactiveFile, stats.MemUsage,
 		)
@@ -153,18 +154,19 @@ func metricsToCtrStats(c *Container, m *cgroups.Metrics) *ContainerStats {
 	}
 }
 
-// getTotalInactiveFile returns the value if `total_inactive_file` as integer
-// from `/sys/fs/cgroup/memory/memory.stat`. It returns an error if the file is
-// not parsable.
-func getTotalInactiveFile() (uint64, error) {
-	// TODO: no cgroupv2 support right now
+// getTotalInactiveFile returns the value if inactive_file as integer
+// from cgroup's memory.stat. Returns an error if the file does not exists,
+// not parsable, or the value is not found.
+func getTotalInactiveFile(path string) (uint64, error) {
+	var filename, varPrefix string
 	if node.CgroupIsV2() {
-		return 0, nil
+		filename = filepath.Join("/sys/fs/cgroup", path, "memory.stat")
+		varPrefix = "inactive_file "
+	} else {
+		filename = filepath.Join("/sys/fs/cgroup/memory", path, "memory.stat")
+		varPrefix = "total_inactive_file "
 	}
-
-	const memoryStat = "/sys/fs/cgroup/memory/memory.stat"
-	const totalInactiveFilePrefix = "total_inactive_file "
-	f, err := os.Open(memoryStat)
+	f, err := os.Open(filename)
 	if err != nil {
 		return 0, err
 	}
@@ -172,9 +174,9 @@ func getTotalInactiveFile() (uint64, error) {
 
 	scanner := bufio.NewScanner(f)
 	for scanner.Scan() {
-		if strings.Contains(scanner.Text(), totalInactiveFilePrefix) {
+		if strings.HasPrefix(scanner.Text(), varPrefix) {
 			val, err := strconv.Atoi(
-				strings.TrimPrefix(scanner.Text(), totalInactiveFilePrefix),
+				strings.TrimPrefix(scanner.Text(), varPrefix),
 			)
 			if err != nil {
 				return 0, errors.Wrap(err, "unable to parse total inactive file value")
@@ -182,10 +184,9 @@ func getTotalInactiveFile() (uint64, error) {
 			return uint64(val), nil
 		}
 	}
-
 	if err := scanner.Err(); err != nil {
 		return 0, err
 	}
 
-	return 0, errors.Errorf("%q not found in %v", totalInactiveFilePrefix, memoryStat)
+	return 0, errors.Errorf("%q not found in %v", varPrefix, filename)
 }