diff --git a/lib/StagehandPage.ts b/lib/StagehandPage.ts
index 3afb6b93c..ec8850d57 100644
--- a/lib/StagehandPage.ts
+++ b/lib/StagehandPage.ts
@@ -470,9 +470,9 @@ ${scriptContent} \
    * `_waitForSettledDom` waits until the DOM is settled, and therefore is
    * ready for actions to be taken.
    *
-   * **Definition of “settled”**
+   * **Definition of "settled"**
    *   • No in-flight network requests (except WebSocket / Server-Sent-Events).
-   *   • That idle state lasts for at least **500 ms** (the “quiet-window”).
+   *   • That idle state lasts for at least **500 ms** (the "quiet-window").
    *
    * **How it works**
    *   1.  Subscribes to CDP Network and Page events for the main target and all
@@ -520,6 +520,7 @@ ${scriptContent} \
 
       let quietTimer: NodeJS.Timeout | null = null;
       let stalledRequestSweepTimer: NodeJS.Timeout | null = null;
+      let isResolved = false; // Flag to prevent multiple resolutions
 
       const clearQuiet = () => {
         if (quietTimer) {
@@ -529,7 +530,7 @@ ${scriptContent} \
       };
 
       const maybeQuiet = () => {
-        if (inflight.size === 0 && !quietTimer)
+        if (inflight.size === 0 && !quietTimer && !isResolved)
           quietTimer = setTimeout(() => resolveDone(), 500);
       };
 
@@ -613,6 +614,10 @@ ${scriptContent} \
       }, timeout);
 
       const resolveDone = () => {
+        // Prevent multiple resolutions of the same Promise
+        if (isResolved) return;
+        isResolved = true;
+
         client.off("Network.requestWillBeSent", onRequest);
         client.off("Network.loadingFinished", onFinish);
         client.off("Network.loadingFailed", onFinish);
@@ -990,7 +995,7 @@ ${scriptContent} \
       if (msg.includes("does not have a separate CDP session")) {
         // Re-use / create the top-level session instead
         const rootSession = await this.getCDPClient(this.page);
-        // cache the alias so we don’t try again for this frame
+        // cache the alias so we don't try again for this frame
         this.cdpClients.set(target, rootSession);
         return rootSession;
       }