diff --git a/fs/expand_glob.ts b/fs/expand_glob.ts
index 59c3b5a78f0e..a2130b40b16c 100644
--- a/fs/expand_glob.ts
+++ b/fs/expand_glob.ts
@@ -428,7 +428,7 @@ export async function* expandGlob(
 export function* expandGlobSync(
   glob: string | URL,
   options?: ExpandGlobOptions,
-): IterableIterator<WalkEntry> {
+): Generator<WalkEntry, void, undefined> {
   let {
     root,
     exclude = [],
@@ -473,7 +473,7 @@ export function* expandGlobSync(
   function* advanceMatch(
     walkInfo: WalkEntry,
     globSegment: string,
-  ): IterableIterator<WalkEntry> {
+  ): Generator<WalkEntry, void, undefined> {
     if (!walkInfo.isDirectory) {
       return;
     } else if (globSegment === "..") {
diff --git a/fs/walk.ts b/fs/walk.ts
index 600e301cfa3f..ca587aa12c66 100644
--- a/fs/walk.ts
+++ b/fs/walk.ts
@@ -878,7 +878,7 @@ export async function* walk(
 export function* walkSync(
   root: string | URL,
   options?: WalkOptions,
-): IterableIterator<WalkEntry> {
+): Generator<WalkEntry, void, undefined> {
   let {
     maxDepth = Infinity,
     includeFiles = true,