diff --git a/src/lib/server/ClientListener.cpp b/src/lib/server/ClientListener.cpp
index f5fc98316..767878a48 100644
--- a/src/lib/server/ClientListener.cpp
+++ b/src/lib/server/ClientListener.cpp
@@ -177,7 +177,7 @@ void ClientListener::handleUnknownClient(ClientProxyUnknown *unknownClient)
     m_events->addEvent(Event(EventTypes::ClientListenerAccepted, this));
 
     // watch for client to disconnect while it's in our queue
-    m_events->addHandler(EventTypes::ClientProxyDisconnected, client, [this, client](const auto &e) {
+    m_events->addHandler(EventTypes::ClientProxyDisconnected, client, [this, client](const auto &) {
       handleClientDisconnected(client);
     });
   } else {
diff --git a/src/lib/server/ClientProxyUnknown.cpp b/src/lib/server/ClientProxyUnknown.cpp
index ad68ea000..c5e7376bd 100644
--- a/src/lib/server/ClientProxyUnknown.cpp
+++ b/src/lib/server/ClientProxyUnknown.cpp
@@ -113,8 +113,8 @@ void ClientProxyUnknown::addProxyHandlers()
 {
   assert(m_proxy != nullptr);
 
-  m_events->addHandler(EventTypes::ClientProxyReady, m_proxy, [this](const auto &e) { sendSuccess(); });
-  m_events->addHandler(EventTypes::ClientProxyDisconnected, m_proxy, [this](const auto &e) { handleDisconnect(); });
+  m_events->addHandler(EventTypes::ClientProxyReady, m_proxy, [this](const auto &) { sendSuccess(); });
+  m_events->addHandler(EventTypes::ClientProxyDisconnected, m_proxy, [this](const auto &) { handleDisconnect(); });
 }
 
 void ClientProxyUnknown::removeHandlers()
diff --git a/src/lib/server/Server.cpp b/src/lib/server/Server.cpp
index 9b55a35e0..aeeaf2c37 100644
--- a/src/lib/server/Server.cpp
+++ b/src/lib/server/Server.cpp
@@ -225,7 +225,7 @@ void Server::adoptClient(BaseClientProxy *client)
   assert(client != nullptr);
 
   // watch for client disconnection
-  m_events->addHandler(EventTypes::ClientProxyDisconnected, client, [this, client](const auto &e) {
+  m_events->addHandler(EventTypes::ClientProxyDisconnected, client, [this, client](const auto &) {
     handleClientDisconnected(client);
   });
 
@@ -1845,7 +1845,7 @@ bool Server::addClient(BaseClientProxy *client)
   }
 
   // add event handlers
-  m_events->addHandler(EventTypes::ScreenShapeChanged, client->getEventTarget(), [this, client](const auto &e) {
+  m_events->addHandler(EventTypes::ScreenShapeChanged, client->getEventTarget(), [this, client](const auto &) {
     handleShapeChanged(client);
   });
   m_events->addHandler(EventTypes::ClipboardGrabbed, client->getEventTarget(), [this, client](const auto &e) {
@@ -1914,7 +1914,7 @@ void Server::closeClient(BaseClientProxy *client, const char *msg)
   // install timer.  wait timeout seconds for client to close.
   double timeout = 5.0;
   EventQueueTimer *timer = m_events->newOneShotTimer(timeout, nullptr);
-  m_events->addHandler(EventTypes::Timer, timer, [this, client](const auto &e) { handleClientCloseTimeout(client); });
+  m_events->addHandler(EventTypes::Timer, timer, [this, client](const auto &) { handleClientCloseTimeout(client); });
 
   // move client to closing list
   removeClient(client);