diff --git a/CHANGELOG.md b/CHANGELOG.md
index 761b19e0..49c4373e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 * Fix compilation error in non-template class
 * Document type-pun in buffer_cat
+* Correctly check ostream modifier (/extras)
 
 HTTP
 
diff --git a/extras/beast/unit_test/dstream.hpp b/extras/beast/unit_test/dstream.hpp
index c62c8060..44eb599b 100644
--- a/extras/beast/unit_test/dstream.hpp
+++ b/extras/beast/unit_test/dstream.hpp
@@ -111,7 +111,7 @@ public:
         : std::basic_ostream<CharT, Traits>(&buf_)
         , buf_(os)
     {
-        if(os.flags() && std::ios::unitbuf)
+        if(os.flags() & std::ios::unitbuf)
             std::unitbuf(*this);
     }
 };
diff --git a/extras/beast/unit_test/reporter.hpp b/extras/beast/unit_test/reporter.hpp
index 771a76df..cb2e3317 100644
--- a/extras/beast/unit_test/reporter.hpp
+++ b/extras/beast/unit_test/reporter.hpp
@@ -283,7 +283,6 @@ reporter<_>::
 on_log(std::string const& s)
 {
     os_ << s;
-    os_.flush();
 }
 
 } // detail
diff --git a/extras/beast/unit_test/suite.hpp b/extras/beast/unit_test/suite.hpp
index 721f49a4..1120daf4 100644
--- a/extras/beast/unit_test/suite.hpp
+++ b/extras/beast/unit_test/suite.hpp
@@ -352,10 +352,7 @@ public:
     {
         auto const& name = ss_.str();
         if(! name.empty())
-        {
-            suite_.log.flush();
             suite_.runner_->testcase(name);
-        }
     }
 
     scoped_testcase(suite& self, std::stringstream& ss)
@@ -394,7 +391,6 @@ suite::testcase_t::operator()(
     std::string const& name, abort_t abort)
 {
     suite_.abort_ = abort == abort_on_fail;
-    suite_.log.flush();
     suite_.runner_->testcase(name);
 }