diff --git a/pkg/sentry/fsimpl/cgroupfs/devices.go b/pkg/sentry/fsimpl/cgroupfs/devices.go
index efec8b6f8..efdbe2f02 100644
--- a/pkg/sentry/fsimpl/cgroupfs/devices.go
+++ b/pkg/sentry/fsimpl/cgroupfs/devices.go
@@ -366,7 +366,7 @@ func toDeviceNumber(s string) (int64, error) {
 	}
 	val, err := strconv.ParseInt(s, 10, 64)
 	if err != nil {
-		return 0, err
+		return 0, linuxerr.EINVAL
 	}
 	return val, nil
 }