diff --git a/lib/attvalue.js b/lib/attvalue.js
index 154961f..6559fd9 100644
--- a/lib/attvalue.js
+++ b/lib/attvalue.js
@@ -54,7 +54,7 @@ export class OpacityValue extends AttValue {
   }
 
   /**
-   * @param {string|AttValue} value
+   * @param {import('./types.js').SVGAttValue} value
    * @returns {OpacityValue}
    */
   static getOpacityObj(value) {
diff --git a/lib/color.js b/lib/color.js
index 5af0f67..8a11490 100644
--- a/lib/color.js
+++ b/lib/color.js
@@ -38,7 +38,7 @@ export class ColorValue extends AttValue {
   }
 
   /**
-   * @param {string|AttValue} value
+   * @param {import('./types.js').SVGAttValue} value
    * @returns {ColorValue}
    */
   static getColorObj(value) {
diff --git a/lib/css-parse-decl.js b/lib/css-parse-decl.js
index 0055d7b..ccca9a4 100644
--- a/lib/css-parse-decl.js
+++ b/lib/css-parse-decl.js
@@ -157,7 +157,7 @@ export class CSSTransformValue extends AttValue {
   }
 
   /**
-   * @param {string|AttValue} value
+   * @param {import('./types.js').SVGAttValue} value
    * @returns {CSSTransformValue}
    */
   static getTransformObj(value) {
diff --git a/lib/length.js b/lib/length.js
index 0ba0853..65154b0 100644
--- a/lib/length.js
+++ b/lib/length.js
@@ -25,7 +25,7 @@ export class LengthValue extends AttValue {
   }
 
   /**
-   * @param {string|AttValue} value
+   * @param {import('./types.js').SVGAttValue} value
    * @returns {LengthValue}
    */
   static getLengthObj(value) {
diff --git a/lib/svg-parse-att.js b/lib/svg-parse-att.js
index fddcef1..37999ed 100644
--- a/lib/svg-parse-att.js
+++ b/lib/svg-parse-att.js
@@ -142,7 +142,7 @@ export class SVGTransformValue extends AttValue {
   }
 
   /**
-   * @param {string|AttValue} value
+   * @param {import('./types.js').SVGAttValue} value
    * @returns {SVGTransformValue}
    */
   static getTransformObj(value) {
diff --git a/lib/types.d.ts b/lib/types.d.ts
index e616380..957c33e 100644
--- a/lib/types.d.ts
+++ b/lib/types.d.ts
@@ -1,5 +1,3 @@
-import type { AttValue } from './attvalue.js';
-
 export type XastDoctype = {
   type: 'doctype';
   parentNode: XastParent;
@@ -134,6 +132,8 @@ type CSSFeatures =
   | 'pseudos'
   | 'simple-selectors';
 
+export class AttValue {}
+
 export class StyleData {
   computeOwnStyle(node: XastElement): Map<string, string | null>;
   computeParentStyle(
@@ -184,7 +184,7 @@ export type CSSParsedTransform = {
 };
 
 export type CSSPropertyValue = {
-  value: string | AttValue;
+  value: SVGAttValue;
   important: boolean;
 };