diff --git a/modules/ripple_data/protocol/ripple_SerializedTypes.h b/modules/ripple_data/protocol/ripple_SerializedTypes.h
index 9ceb76bb1..ba79db09d 100644
--- a/modules/ripple_data/protocol/ripple_SerializedTypes.h
+++ b/modules/ripple_data/protocol/ripple_SerializedTypes.h
@@ -1221,6 +1221,10 @@ public:
     {
         return mPath.size ();
     }
+    void reserve (size_t n)
+    {
+        mPath.reserve(n);
+    }
     bool isEmpty () const
     {
         return mPath.empty ();
@@ -1340,6 +1344,10 @@ public:
     {
         return value.size ();
     }
+    void reserve (size_t n)
+    {
+        value.reserve(n);
+    }
     const STPath& getPath (int off) const
     {
         return value[off];