diff --git a/ksldapp.cpp b/ksldapp.cpp
--- a/ksldapp.cpp
+++ b/ksldapp.cpp
@@ -609,7 +609,7 @@
             return;
         }
         m_lockWindow->setGlobalAccel(m_globalAccel);
-        connect(m_lockWindow, &AbstractLocker::userActivity, this,
+        connect(m_lockWindow, &AbstractLocker::userActivity, m_lockWindow,
             [this]() {
                 if (isGraceTime()) {
                     unlock();