diff --git a/src/test/streams_tests.cpp b/src/test/streams_tests.cpp
index 14bcfc7cc7..baa8778b07 100644
--- a/src/test/streams_tests.cpp
+++ b/src/test/streams_tests.cpp
@@ -6,11 +6,8 @@
 #include <support/allocators/zeroafterfree.h>
 #include <test/test_dash.h>
 
-#include <boost/assign/std/vector.hpp> // for 'operator+=()'
 #include <boost/test/unit_test.hpp>
 
-using namespace boost::assign; // bring 'operator+=()' into scope
-
 BOOST_FIXTURE_TEST_SUITE(streams_tests, BasicTestingSetup)
 
 BOOST_AUTO_TEST_CASE(streams_vector_writer)
@@ -80,14 +77,17 @@ BOOST_AUTO_TEST_CASE(streams_serializedata_xor)
 
     // Degenerate case
     
-    key += '\x00','\x00';
+    key.push_back('\x00');
+    key.push_back('\x00');
     ds.Xor(key);
     BOOST_CHECK_EQUAL(
             std::string(expected_xor.begin(), expected_xor.end()), 
             std::string(ds.begin(), ds.end()));
 
-    in += '\x0f','\xf0';
-    expected_xor += '\xf0','\x0f';
+    in.push_back('\x0f');
+    in.push_back('\xf0');
+    expected_xor.push_back('\xf0');
+    expected_xor.push_back('\x0f');
     
     // Single character key
 
@@ -95,7 +95,7 @@ BOOST_AUTO_TEST_CASE(streams_serializedata_xor)
     ds.insert(ds.begin(), in.begin(), in.end());
     key.clear();
 
-    key += '\xff';
+    key.push_back('\xff');
     ds.Xor(key);
     BOOST_CHECK_EQUAL(
             std::string(expected_xor.begin(), expected_xor.end()), 
@@ -105,14 +105,17 @@ BOOST_AUTO_TEST_CASE(streams_serializedata_xor)
 
     in.clear();
     expected_xor.clear();
-    in += '\xf0','\x0f';
-    expected_xor += '\x0f','\x00';
+    in.push_back('\xf0');
+    in.push_back('\x0f');
+    expected_xor.push_back('\x0f');
+    expected_xor.push_back('\x00');
                         
     ds.clear();
     ds.insert(ds.begin(), in.begin(), in.end());
 
     key.clear();
-    key += '\xff','\x0f';
+    key.push_back('\xff');
+    key.push_back('\x0f');
 
     ds.Xor(key);
     BOOST_CHECK_EQUAL(