--- a/browser/components/urlbar/UrlbarInput.jsm
+++ b/browser/components/urlbar/UrlbarInput.jsm
@@ -430,16 +430,22 @@ class UrlbarInput {
   }
 
   _on_input(event) {
     let value = event.target.value;
     this.valueIsTyped = true;
     this._untrimmedValue = value;
     this.window.gBrowser.userTypedValue = value;
 
+    if (value) {
+      this.setAttribute("usertyping", "true");
+    } else {
+      this.removeAttribute("usertyping");
+    }
+
     // XXX Fill in lastKey, and add anything else we need.
     this.controller.startQuery(new QueryContext({
       searchString: value,
       lastKey: "",
       maxResults: UrlbarPrefs.get("maxRichResults"),
       isPrivate: this.isPrivate,
     }));
   }