diff --git a/src/common/net/Client.cpp b/src/common/net/Client.cpp
index 3a93789b6..6a79749d8 100644
--- a/src/common/net/Client.cpp
+++ b/src/common/net/Client.cpp
@@ -482,7 +482,9 @@ int64_t Client::send(const rapidjson::Document &doc)
     doc.Accept(writer);
 
     const size_t size = buffer.GetSize();
-    if (size > (sizeof(m_buf) - 2)) {
+    if (size > (sizeof(m_sendBuf) - 2)) {
+        LOG_ERR("[%s] send failed: \"send buffer overflow: %zu > %zu\"", m_pool.url(), size, (sizeof(m_sendBuf) - 2));
+        close();
         return -1;
     }
 
diff --git a/src/common/net/Client.h b/src/common/net/Client.h
index 55105c0ba..d64183384 100644
--- a/src/common/net/Client.h
+++ b/src/common/net/Client.h
@@ -140,7 +140,7 @@ private:
     bool m_quiet;
     char m_buf[kInputBufferSize];
     char m_ip[46];
-    char m_sendBuf[1024];
+    char m_sendBuf[2048];
     const char *m_agent;
     IClientListener *m_listener;
     int m_extensions;