diff --git a/hasherx/hash_comparator.go b/hasherx/hash_comparator.go
index e9abaee2..be2745fe 100644
--- a/hasherx/hash_comparator.go
+++ b/hasherx/hash_comparator.go
@@ -164,7 +164,7 @@ func decodeArgon2idHash(encodedHash string) (p *Argon2Config, salt, hash []byte,
 	if err != nil {
 		return nil, nil, nil, err
 	}
-	saltLength := len(salt)
+	saltLength := uint(len(salt))
 	if saltLength > math.MaxUint32 {
 		return nil, nil, nil, ErrInvalidHash
 	}
@@ -174,7 +174,7 @@ func decodeArgon2idHash(encodedHash string) (p *Argon2Config, salt, hash []byte,
 	if err != nil {
 		return nil, nil, nil, err
 	}
-	keyLength := len(hash)
+	keyLength := uint(len(hash))
 	if keyLength > math.MaxUint32 {
 		return nil, nil, nil, ErrInvalidHash
 	}
@@ -207,7 +207,7 @@ func decodePbkdf2Hash(encodedHash string) (p *PBKDF2Config, salt, hash []byte, e
 	if err != nil {
 		return nil, nil, nil, err
 	}
-	saltLength := len(salt)
+	saltLength := uint(len(salt))
 	if saltLength > math.MaxUint32 {
 		return nil, nil, nil, ErrInvalidHash
 	}
@@ -217,7 +217,7 @@ func decodePbkdf2Hash(encodedHash string) (p *PBKDF2Config, salt, hash []byte, e
 	if err != nil {
 		return nil, nil, nil, err
 	}
-	keyLength := len(hash)
+	keyLength := uint(len(hash))
 	if keyLength > math.MaxUint32 {
 		return nil, nil, nil, ErrInvalidHash
 	}
diff --git a/mapx/type_assert.go b/mapx/type_assert.go
index f76de985..5645f3bd 100644
--- a/mapx/type_assert.go
+++ b/mapx/type_assert.go
@@ -97,10 +97,11 @@ func GetInt64[K comparable](values map[K]any, key K) (int64, error) {
 	case int32:
 		return int64(v), nil
 	case uint:
-		if v > math.MaxInt64 {
+		vv := uint64(v)
+		if vv > math.MaxInt64 {
 			return 0, errors.New("value is out of range")
 		}
-		return int64(v), nil
+		return int64(vv), nil
 	case uint32:
 		return int64(v), nil
 	case uint64: