diff --git a/src/server/poolserver/Stratum/Client.cpp b/src/server/poolserver/Stratum/Client.cpp
index 4942d59..0ad8f23 100644
--- a/src/server/poolserver/Stratum/Client.cpp
+++ b/src/server/poolserver/Stratum/Client.cpp
@@ -388,6 +388,10 @@ namespace Stratum
                 } else
                     _recvMessage += c;
             }
+			
+			// Check if message doesn't exceed maximum packet size
+			if (_recvMessage.size() > MAX_PACKET)
+				Disconnect();
             
             StartRead();
         } else {
diff --git a/src/server/poolserver/Stratum/Server.h b/src/server/poolserver/Stratum/Server.h
index a77246a..208b10d 100644
--- a/src/server/poolserver/Stratum/Server.h
+++ b/src/server/poolserver/Stratum/Server.h
@@ -18,6 +18,8 @@
 #include <set>
 #include <vector>
 
+#define MAX_PACKET 4096
+
 using namespace boost;
 using namespace boost::asio::ip;