diff --git a/src/comm/comm_server.hpp b/src/comm/comm_server.hpp
index 02040c16..38297bf7 100644
--- a/src/comm/comm_server.hpp
+++ b/src/comm/comm_server.hpp
@@ -10,7 +10,7 @@
 
 namespace comm
 {
-    constexpr uint32_t DEFAULT_MAX_MSG_SIZE = 16 * 1024 * 1024;
+    constexpr uint32_t DEFAULT_MAX_MSG_SIZE = 4 * 1024 * 1024;
 
     template <typename T>
     class comm_server
diff --git a/test/bin/hpws b/test/bin/hpws
index bc05a115..3776bcdc 100755
Binary files a/test/bin/hpws and b/test/bin/hpws differ