diff --git a/base/base_tests/buffer_vector_test.cpp b/base/base_tests/buffer_vector_test.cpp
index 62133de144..4e843a1b2c 100644
--- a/base/base_tests/buffer_vector_test.cpp
+++ b/base/base_tests/buffer_vector_test.cpp
@@ -168,6 +168,33 @@ UNIT_TEST(BufferVectorInsert)
   }
 }
 
+UNIT_TEST(BufferVectorAppend)
+{
+  for (size_t initialLength = 0; initialLength < 20; ++initialLength)
+  {
+    for (size_t insertLength = 0; insertLength < 20; ++insertLength)
+    {
+      buffer_vector<char, 5> b;
+      vector<char> v;
+      for (size_t i = 0; i < initialLength; ++i)
+      {
+        b.push_back('A' + i);
+        v.push_back('A' + i);
+      }
+
+      vector<int> dataToInsert(insertLength);
+      for (size_t i = 0; i < insertLength; ++i)
+        dataToInsert[i] = 'a' + i;
+
+      b.append(dataToInsert.begin(), dataToInsert.end());
+      v.insert(v.end(), dataToInsert.begin(), dataToInsert.end());
+
+      vector<char> result(b.begin(), b.end());
+      TEST_EQUAL(v, result, (initialLength, insertLength));
+    }
+  }
+}
+
 UNIT_TEST(BufferVectorPopBack)
 {
   for (size_t len = 1; len < 6; ++len)
diff --git a/base/buffer_vector.hpp b/base/buffer_vector.hpp
index ffdd30e4a0..ca31a9f65d 100644
--- a/base/buffer_vector.hpp
+++ b/base/buffer_vector.hpp
@@ -34,13 +34,12 @@ public:
   }
 
   template <typename IterT>
-  void assign(IterT beg, IterT end)
+  void append(IterT beg, IterT end)
   {
     if (m_size == USE_DYNAMIC)
-      m_dynamic.assign(beg, end);
+      m_dynamic.insert(m_dynamic.end(), beg, end);
     else
     {
-      m_size = 0;
       while (beg != end)
       {
         if (m_size == N)
@@ -56,6 +55,18 @@ public:
     }
   }
 
+  template <typename IterT>
+  void assign(IterT beg, IterT end)
+  {
+    if (m_size == USE_DYNAMIC)
+      m_dynamic.assign(beg, end);
+    else
+    {
+      m_size = 0;
+      append(beg, end);
+    }
+  }
+
   void reserve(size_t n)
   {
     if (m_size == USE_DYNAMIC || n > N)