diff --git a/README.md b/README.md
index 3e78caf0..aeb9260c 100644
--- a/README.md
+++ b/README.md
@@ -240,7 +240,7 @@ following attributes:
 
 - `file`: Optional. The generated filename this source map is associated with.
 
-- `x_google_ignoreList`: Optional. An additional extension field which is an array
+- `ignoreList` (or `x_google_ignoreList`): Optional. An additional extension field which is an array
   of indices refering to urls in the sources array. This is used to identify third-party
   sources, that the developer might want to avoid when debugging. [Read more](https://developer.chrome.com/articles/x-google-ignore-list/)
 
diff --git a/lib/source-map-consumer.js b/lib/source-map-consumer.js
index 17ef92b1..4bf6944b 100644
--- a/lib/source-map-consumer.js
+++ b/lib/source-map-consumer.js
@@ -187,10 +187,10 @@ class BasicSourceMapConsumer extends SourceMapConsumer {
       const sourcesContent = util.getArg(sourceMap, "sourcesContent", null);
       const mappings = util.getArg(sourceMap, "mappings");
       const file = util.getArg(sourceMap, "file", null);
-      const x_google_ignoreList = util.getArg(
+      const ignoreList = util.getArg(
         sourceMap,
-        "x_google_ignoreList",
-        null
+        "ignoreList",
+        util.getArg(sourceMap, "x_google_ignoreList", null)
       );
 
       // Once again, Sass deviates from the spec and supplies the version as a
@@ -220,7 +220,8 @@ class BasicSourceMapConsumer extends SourceMapConsumer {
       that._mappings = mappings;
       that._sourceMapURL = aSourceMapURL;
       that.file = file;
-      that.x_google_ignoreList = x_google_ignoreList;
+      that.ignoreList = ignoreList;
+      that.x_google_ignoreList = ignoreList;
 
       that._computedColumnSpans = false;
       that._wasmMappings = null;
@@ -283,7 +284,7 @@ class BasicSourceMapConsumer extends SourceMapConsumer {
    * @returns BasicSourceMapConsumer
    */
   static fromSourceMap(aSourceMap, aSourceMapURL) {
-    return new BasicSourceMapConsumer(aSourceMap.toString());
+    return new BasicSourceMapConsumer(aSourceMap.toString(), aSourceMapURL);
   }
 
   get sources() {