diff --git a/accessible/windows/ia2/ia2Accessible.cpp b/accessible/windows/ia2/ia2Accessible.cpp
index a18012649902..0867e767cbd2 100644
--- a/accessible/windows/ia2/ia2Accessible.cpp
+++ b/accessible/windows/ia2/ia2Accessible.cpp
@@ -18,6 +18,7 @@
 #include "nsIAccessibleTypes.h"
 #include "mozilla/a11y/PDocAccessible.h"
 #include "Relation.h"
+#include "nsAccessibilityService.h"
 
 #include "nsIPersistentProperties2.h"
 #include "nsISimpleEnumerator.h"
@@ -651,7 +652,27 @@ ia2Accessible::get_accessibleWithCaret(IUnknown** aAccessible,
 
   *aAccessible = nullptr;
   *aCaretOffset = -1;
-  return E_NOTIMPL;
+
+  AccessibleWrap* acc = static_cast<AccessibleWrap*>(this);
+  if (acc->IsDefunct())
+    return CO_E_OBJNOTCONNECTED;
+
+  int32_t caretOffset = -1;
+  Accessible* accWithCaret = SelectionMgr()->AccessibleWithCaret(&caretOffset);
+  if (acc->Document() != accWithCaret->Document())
+    return S_FALSE;
+
+  Accessible* child = accWithCaret;
+  while (child != acc)
+    child = child->Parent();
+
+  if (!child)
+    return S_FALSE;
+
+  *aAccessible =  static_cast<IAccessible2*>(
+    static_cast<AccessibleWrap*>(accWithCaret));
+  *aCaretOffset = caretOffset;
+  return S_OK;
 
   A11Y_TRYBLOCK_END
 }