1 files changed, 4 insertions, 0 deletions
diff --git a/Firestore/core/src/firebase/firestore/model/maybe_document.h b/Firestore/core/src/firebase/firestore/model/maybe_document.h
index 71bd3ef..c2ffb86 100644
--- a/Firestore/core/src/firebase/firestore/model/maybe_document.h
+++ b/Firestore/core/src/firebase/firestore/model/maybe_document.h
@@ -18,6 +18,7 @@
 #define FIRESTORE_CORE_SRC_FIREBASE_FIRESTORE_MODEL_MAYBE_DOCUMENT_H_
 
 #include <functional>
+#include <memory>
 
 #include "Firestore/core/src/firebase/firestore/model/document_key.h"
 #include "Firestore/core/src/firebase/firestore/model/snapshot_version.h"
@@ -44,6 +45,9 @@ class MaybeDocument {
 
   MaybeDocument(DocumentKey key, SnapshotVersion version);
 
+  virtual ~MaybeDocument() {
+  }
+
   /** The runtime type of this document. */
   Type type() const {
     return type_;