diff --git a/idle_inhibition.h b/idle_inhibition.h
--- a/idle_inhibition.h
+++ b/idle_inhibition.h
@@ -24,8 +24,6 @@
 #include <QVector>
 #include <QMap>
 
-#include <algorithm>
-
 namespace KWayland
 {
 namespace Server
@@ -54,7 +52,7 @@
         return !m_idleInhibitors.isEmpty();
     }
     bool isInhibited(AbstractClient *client) const {
-        return std::any_of(m_idleInhibitors.begin(), m_idleInhibitors.end(), [client] (auto c) { return c == client; });
+        return m_idleInhibitors.contains(client);
     }
 
 private Q_SLOTS:
diff --git a/idle_inhibition.cpp b/idle_inhibition.cpp
--- a/idle_inhibition.cpp
+++ b/idle_inhibition.cpp
@@ -26,6 +26,7 @@
 #include <KWayland/Server/idle_interface.h>
 #include <KWayland/Server/surface_interface.h>
 
+#include <algorithm>
 #include <functional>
 
 using KWayland::Server::SurfaceInterface;
@@ -82,7 +83,7 @@
 
 void IdleInhibition::uninhibit(AbstractClient *client)
 {
-    auto it = std::find_if(m_idleInhibitors.begin(), m_idleInhibitors.end(), [client] (auto c) { return c == client; });
+    auto it = std::find(m_idleInhibitors.begin(), m_idleInhibitors.end(), client);
     if (it == m_idleInhibitors.end()) {
         // not inhibited
         return;