diff --git a/src/framework/net/connection.cpp b/src/framework/net/connection.cpp
index db81fad8..ee37a3f7 100644
--- a/src/framework/net/connection.cpp
+++ b/src/framework/net/connection.cpp
@@ -101,7 +101,7 @@ void Connection::connect(const std::string& host, uint16 port, const std::functi
     m_resolver.async_resolve(query, std::bind(&Connection::onResolve, asConnection(), std::placeholders::_1, std::placeholders::_2));
 
     m_readTimer.cancel();
-    m_readTimer.expires_from_now(boost::posix_time::seconds(READ_TIMEOUT));
+    m_readTimer.expires_from_now(boost::posix_time::seconds(static_cast<uint32>(READ_TIMEOUT)));
     m_readTimer.async_wait(std::bind(&Connection::onTimeout, asConnection(), std::placeholders::_1));
 }
 
@@ -110,7 +110,7 @@ void Connection::internal_connect(asio::ip::basic_resolver<asio::ip::tcp>::itera
     m_socket.async_connect(*endpointIterator, std::bind(&Connection::onConnect, asConnection(), std::placeholders::_1));
 
     m_readTimer.cancel();
-    m_readTimer.expires_from_now(boost::posix_time::seconds(READ_TIMEOUT));
+    m_readTimer.expires_from_now(boost::posix_time::seconds(static_cast<uint32>(READ_TIMEOUT)));
     m_readTimer.async_wait(std::bind(&Connection::onTimeout, asConnection(), std::placeholders::_1));
 }
 
@@ -150,7 +150,7 @@ void Connection::internal_write()
                       std::bind(&Connection::onWrite, asConnection(), std::placeholders::_1, std::placeholders::_2, outputStream));
 
     m_writeTimer.cancel();
-    m_writeTimer.expires_from_now(boost::posix_time::seconds(WRITE_TIMEOUT));
+    m_writeTimer.expires_from_now(boost::posix_time::seconds(static_cast<uint32>(WRITE_TIMEOUT)));
     m_writeTimer.async_wait(std::bind(&Connection::onTimeout, asConnection(), std::placeholders::_1));
 }
 
@@ -166,7 +166,7 @@ void Connection::read(uint16 bytes, const RecvCallback& callback)
                      std::bind(&Connection::onRecv, asConnection(), std::placeholders::_1, std::placeholders::_2));
 
     m_readTimer.cancel();
-    m_readTimer.expires_from_now(boost::posix_time::seconds(READ_TIMEOUT));
+    m_readTimer.expires_from_now(boost::posix_time::seconds(static_cast<uint32>(READ_TIMEOUT)));
     m_readTimer.async_wait(std::bind(&Connection::onTimeout, asConnection(), std::placeholders::_1));
 }
 
@@ -183,7 +183,7 @@ void Connection::read_until(const std::string& what, const RecvCallback& callbac
                            std::bind(&Connection::onRecv, asConnection(), std::placeholders::_1, std::placeholders::_2));
 
     m_readTimer.cancel();
-    m_readTimer.expires_from_now(boost::posix_time::seconds(READ_TIMEOUT));
+    m_readTimer.expires_from_now(boost::posix_time::seconds(static_cast<uint32>(READ_TIMEOUT)));
     m_readTimer.async_wait(std::bind(&Connection::onTimeout, asConnection(), std::placeholders::_1));
 }
 
@@ -198,7 +198,7 @@ void Connection::read_some(const RecvCallback& callback)
                              std::bind(&Connection::onRecv, asConnection(), std::placeholders::_1, std::placeholders::_2));
 
     m_readTimer.cancel();
-    m_readTimer.expires_from_now(boost::posix_time::seconds(READ_TIMEOUT));
+    m_readTimer.expires_from_now(boost::posix_time::seconds(static_cast<uint32>(READ_TIMEOUT)));
     m_readTimer.async_wait(std::bind(&Connection::onTimeout, asConnection(), std::placeholders::_1));
 }
 
diff --git a/src/framework/net/connection.h b/src/framework/net/connection.h
index 93a701ee..b9e56181 100644
--- a/src/framework/net/connection.h
+++ b/src/framework/net/connection.h
@@ -33,10 +33,9 @@ class Connection : public LuaObject
     typedef std::function<void(const boost::system::error_code&)> ErrorCallback;
     typedef std::function<void(uint8*, uint16)> RecvCallback;
 
-    static constexpr int32_t READ_TIMEOUT = 30;
-    static constexpr int32_t WRITE_TIMEOUT = 30;
-
     enum {
+        READ_TIMEOUT = 30,
+        WRITE_TIMEOUT = 30,
         SEND_BUFFER_SIZE = 65536,
         RECV_BUFFER_SIZE = 65536
     };