diff --git a/nip13/helpers.go b/nip13/helpers.go
deleted file mode 100644
index 33eb8c4..0000000
--- a/nip13/helpers.go
+++ /dev/null
@@ -1,25 +0,0 @@
-package nip13
-
-const (
-	maxSafeAscii       = 126
-	minSafeAscii       = 35
-	availableSafeAscii = maxSafeAscii - minSafeAscii
-)
-
-func uintToStringCrazy(num uint64) string {
-	nchars := 1 + num/availableSafeAscii
-	chars := make([]byte, nchars)
-
-	i := 0
-	for {
-		if num < availableSafeAscii {
-			chars[i] = byte(num + minSafeAscii)
-			break
-		} else {
-			chars[i] = byte(num/availableSafeAscii + minSafeAscii)
-			num -= availableSafeAscii
-			i++
-		}
-	}
-	return string(chars)
-}
diff --git a/nip13/nip13.go b/nip13/nip13.go
index 9198031..ee01d4c 100644
--- a/nip13/nip13.go
+++ b/nip13/nip13.go
@@ -80,7 +80,7 @@ func Generate(event *nostr.Event, targetDifficulty int, timeout time.Duration) (
 	start := time.Now()
 	for {
 		nonce++
-		tag[1] = uintToStringCrazy(nonce)
+		tag[1] = strconv.FormatUint(nonce, 10)
 		if Difficulty(event.GetID()) >= targetDifficulty {
 			return event, nil
 		}
diff --git a/nip13/nip13_test.go b/nip13/nip13_test.go
index ccd7393..3d1821d 100644
--- a/nip13/nip13_test.go
+++ b/nip13/nip13_test.go
@@ -100,8 +100,8 @@ func testNonceTag(t *testing.T, event *nostr.Event, commitment int) {
 	if tag[0] != "nonce" {
 		t.Errorf("tag[0] = %q; want 'nonce'", tag[0])
 	}
-	if len(tag[1]) < 0 {
-		t.Errorf("tag[1] = %q; want a nonce character", tag[1])
+	if n, err := strconv.ParseInt(tag[1], 10, 64); err != nil || n < 1 {
+		t.Errorf("tag[1] = %q; want an int greater than 0", tag[1])
 	}
 	if n, err := strconv.Atoi(tag[2]); err != nil || n != commitment {
 		t.Errorf("tag[2] = %q; want %d", tag[2], commitment)