diff --git a/base/base_tests/buffer_vector_test.cpp b/base/base_tests/buffer_vector_test.cpp
index 3a209197f4..cf1407f203 100644
--- a/base/base_tests/buffer_vector_test.cpp
+++ b/base/base_tests/buffer_vector_test.cpp
@@ -74,12 +74,9 @@ UNIT_TEST(BufferVectorSwap)
     TEST_EQUAL ( v1[0][0], 666, () );
     TEST_EQUAL ( dd1, v1[0].data(), () );
 
-    // resize from 1 to 7 => will push_back v[0] to new place
-    // (??? but can stay at the same place ???)
     v1.resize(7);
     TEST_EQUAL ( v1[0].size(), 1, () );
     TEST_EQUAL ( v1[0][0], 666, () );
-    TEST_NOT_EQUAL ( dd1, v1[0].data(), () );
   }
 
   {
diff --git a/base/buffer_vector.hpp b/base/buffer_vector.hpp
index 31fd71bb7f..d33cb825df 100644
--- a/base/buffer_vector.hpp
+++ b/base/buffer_vector.hpp
@@ -278,7 +278,6 @@ public:
       else
       {
         ASSERT_EQUAL(m_size, N, ());
-        m_dynamic.reserve(N + 1);
         SwitchToDynamic();
         m_dynamic.push_back(t);
         ASSERT_EQUAL(m_dynamic.size(), N + 1, ());
@@ -297,7 +296,6 @@ public:
       else
       {
         ASSERT_EQUAL(m_size, N, ());
-        m_dynamic.reserve(N + 1);
         SwitchToDynamic();
         m_dynamic.push_back(move(t));
         ASSERT_EQUAL(m_dynamic.size(), N + 1, ());