diff --git a/src/app.cpp b/src/app.cpp
index 8d4c583..b4cbdf9 100644
--- a/src/app.cpp
+++ b/src/app.cpp
@@ -539,6 +539,7 @@ Wt::WContainerWidget* App::createSmileyBar(Wt::WContainerWidget* parent, Wt::WLi
 }
 
 Wt::WPushButton* App::createSendButton(Wt::WHBoxLayout* inputLayout, Wt::WLineEdit* inputLine) {
+    setActivity();
     auto sendButton = inputLayout->addNew<Wt::WPushButton>("Send");
     auto sendMessageFunction = [=, this]() {
         sendMessage(inputLine);