diff --git a/include/rapidjson/pointer.h b/include/rapidjson/pointer.h
index 05b1704..6f4ef38 100644
--- a/include/rapidjson/pointer.h
+++ b/include/rapidjson/pointer.h
@@ -890,10 +890,16 @@ private:
             std::memcpy(nameBuffer_, rhs.nameBuffer_, nameBufferSize * sizeof(Ch));
         }
 
-        // Adjust pointers to name buffer
-        std::ptrdiff_t diff = nameBuffer_ - rhs.nameBuffer_;
-        for (Token *t = tokens_; t != tokens_ + rhs.tokenCount_; ++t)
-            t->name += diff;
+        // The names of each token point to a string in the nameBuffer_. The
+        // previous memcpy copied over string pointers into the rhs.nameBuffer_,
+        // but they should point to the strings in the new nameBuffer_.
+        for (size_t i = 0; i < rhs.tokenCount_; ++i) {
+          // The offset between the string address and the name buffer should
+          // still be constant, so we can just get this offset and set each new
+          // token name according the new buffer start + the known offset.
+          std::ptrdiff_t name_offset = rhs.tokens_[i].name - rhs.nameBuffer_;
+          tokens_[i].name = nameBuffer_ + name_offset;
+        }
 
         return nameBuffer_ + nameBufferSize;
     }