1 files changed, 2 insertions, 3 deletions
diff --git a/Firestore/core/src/firebase/firestore/model/field_transform.h b/Firestore/core/src/firebase/firestore/model/field_transform.h
index a1dd96c..1a7127a 100644
--- a/Firestore/core/src/firebase/firestore/model/field_transform.h
+++ b/Firestore/core/src/firebase/firestore/model/field_transform.h
@@ -22,6 +22,7 @@
 
 #include "Firestore/core/src/firebase/firestore/model/field_path.h"
 #include "Firestore/core/src/firebase/firestore/model/transform_operations.h"
+#include "Firestore/core/src/firebase/firestore/util/hashing.h"
 
 namespace firebase {
 namespace firestore {
@@ -51,9 +52,7 @@ class FieldTransform {
   // For Objective-C++ hash; to be removed after migration.
   // Do NOT use in C++ code.
   NSUInteger Hash() const {
-    NSUInteger hash = path_.Hash();
-    hash = hash * 31 + transformation_->Hash();
-    return hash;
+    return util::Hash(path_, transformation_->Hash());
   }
 #endif  // defined(__OBJC__)