diff --git a/cmd/provision/fetcher.go b/cmd/provision/fetcher.go
index 970a7b40..98a86684 100644
--- a/cmd/provision/fetcher.go
+++ b/cmd/provision/fetcher.go
@@ -60,10 +60,10 @@ func readHTTP(ctx context.Context, u *url.URL) ([]byte, error) {
 		return nil, err
 	}
 	switch resp.StatusCode {
-	case 404:
+	case http.StatusNotFound:
 		klog.Infof("Not found: %q", u.String())
 		return nil, os.ErrNotExist
-	case 200:
+	case http.StatusOK:
 		break
 	default:
 		return nil, fmt.Errorf("unexpected http status %q", resp.Status)
diff --git a/cmd/provision/main.go b/cmd/provision/main.go
index 0adddbe7..3993ef43 100644
--- a/cmd/provision/main.go
+++ b/cmd/provision/main.go
@@ -61,8 +61,8 @@ var (
 
 	appletVerifier   = flag.String("applet_verifier", "", "Verifier key for the applet manifest.")
 	bootVerifier     = flag.String("boot_verifier", "", "Verifier key for the boot manifest.")
-	osVerifier1      = flag.String("os_verifier_1", "", "Verifier key 1 for the os manifest.")
-	osVerifier2      = flag.String("os_verifier_2", "", "Verifier key 2 for the os manifest.")
+	osVerifier1      = flag.String("os_verifier_1", "", "Verifier key 1 for the OS manifest.")
+	osVerifier2      = flag.String("os_verifier_2", "", "Verifier key 2 for the OS manifest.")
 	recoveryVerifier = flag.String("recovery_verifier", "", "Verifier key for the recovery manifest.")
 
 	blockDeviceGlob = flag.String("blockdevs", "/dev/sd*", "Glob for plausible block devices where the armored witness could appear")
@@ -135,11 +135,11 @@ func fetchLatestArtefacts(ctx context.Context) (*firmwares, error) {
 	}
 	osVerifier1, err := note.NewVerifier(*osVerifier1)
 	if err != nil {
-		return nil, fmt.Errorf("invalid os verifier 1: %v", err)
+		return nil, fmt.Errorf("invalid OS verifier 1: %v", err)
 	}
 	osVerifier2, err := note.NewVerifier(*osVerifier2)
 	if err != nil {
-		return nil, fmt.Errorf("invalid os verifier 2: %v", err)
+		return nil, fmt.Errorf("invalid OS verifier 2: %v", err)
 	}
 	recoveryVerifier, err := note.NewVerifier(*recoveryVerifier)
 	if err != nil {
@@ -179,12 +179,12 @@ func fetchLatestArtefacts(ctx context.Context) (*firmwares, error) {
 		return nil, fmt.Errorf("Scan: %v", err)
 	}
 
-	latestOsVer, latestAppletVer, err := updateFetcher.GetLatestVersions(ctx)
+	latestOSVer, latestAppletVer, err := updateFetcher.GetLatestVersions(ctx)
 	if err != nil {
 		return nil, fmt.Errorf("GetLatestVersions: %v", err)
 	}
 
-	klog.Infof("Found latest versions: OS %v, Applet %v", latestOsVer, latestAppletVer)
+	klog.Infof("Found latest versions: OS %v, Applet %v", latestOSVer, latestAppletVer)
 
 	fw := &firmwares{
 		BootloaderBlock:    bootloaderBlock,