diff --git a/dom/base/FuzzingFunctions.cpp b/dom/base/FuzzingFunctions.cpp
index 08d408a3d0c4..15ba1339e545 100644
--- a/dom/base/FuzzingFunctions.cpp
+++ b/dom/base/FuzzingFunctions.cpp
@@ -8,6 +8,8 @@
 
 #include "nsJSEnvironment.h"
 #include "js/GCAPI.h"
+#include "nsIAccessibilityService.h"
+#include "xpcAccessibilityService.h"
 
 namespace mozilla {
 namespace dom {
@@ -26,5 +28,18 @@ FuzzingFunctions::CycleCollect(const GlobalObject&)
   nsJSContext::CycleCollectNow();
 }
 
+/* static */ void
+FuzzingFunctions::EnableAccessibility(const GlobalObject&,
+                                      ErrorResult& aRv)
+{
+  RefPtr<nsIAccessibilityService> a11y;
+  nsresult rv;
+
+  rv = NS_GetAccessibilityService(getter_AddRefs(a11y));
+  if (NS_FAILED(rv)) {
+    aRv.Throw(rv);
+  }
+}
+
 } // namespace dom
 } // namespace mozilla
diff --git a/dom/base/FuzzingFunctions.h b/dom/base/FuzzingFunctions.h
index 98799012f1f2..93aad43befb7 100644
--- a/dom/base/FuzzingFunctions.h
+++ b/dom/base/FuzzingFunctions.h
@@ -20,6 +20,9 @@ public:
 
   static void
   CycleCollect(const GlobalObject&);
+
+  static void
+  EnableAccessibility(const GlobalObject&, ErrorResult& aRv);
 };
 
 } // namespace dom
diff --git a/dom/webidl/FuzzingFunctions.webidl b/dom/webidl/FuzzingFunctions.webidl
index b8f362c86db0..268db55436a2 100644
--- a/dom/webidl/FuzzingFunctions.webidl
+++ b/dom/webidl/FuzzingFunctions.webidl
@@ -21,4 +21,10 @@ interface FuzzingFunctions {
    * Synchronously perform a cycle collection.
    */
   static void cycleCollect();
+
+  /**
+   * Enable accessibility.
+   */
+  [Throws]
+  static void enableAccessibility();
 };