diff --git a/CMakeLists.txt b/CMakeLists.txt
index 207c90a5..46484769 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -55,7 +55,7 @@ endif()

 if (UNIX AND NOT APPLE AND NOT NO_X11)
     add_definitions(-DQZ_WS_X11)
-    find_package(XCB REQUIRED COMPONENTS XCB UTIL)
+    find_package(XCB REQUIRED COMPONENTS XCB)
     find_package(Qt5 ${QT_MIN_VERSION} REQUIRED COMPONENTS X11Extras)
 endif()
 if (WIN32)
@@ -88,9 +88,6 @@ endif()
 # Mandatory: OpenSSL
 find_package(OpenSSL REQUIRED)

-# Mandatory: KF5
-find_package(KF5 REQUIRED COMPONENTS Archive)
-
 # KF5I18n: Mandatory with downloaded translations (only for ki18n_install)
 if (EXISTS "${CMAKE_SOURCE_DIR}/po")
     find_package(KF5I18n REQUIRED)
diff --git a/src/lib/CMakeLists.txt b/src/lib/CMakeLists.txt
index 3b7efff0..70416b47 100644
--- a/src/lib/CMakeLists.txt
+++ b/src/lib/CMakeLists.txt
@@ -156,7 +156,6 @@ set(SRCS ${SRCS}
     plugins/pluginproxy.cpp
     plugins/plugins.cpp
     plugins/speeddial.cpp
-    plugins/ocssupport.cpp
     plugins/qml/qmlpluginloader.cpp
     plugins/qml/qmlplugin.cpp
     plugins/qml/qmlplugins.cpp
@@ -352,7 +351,6 @@ target_link_libraries(FalkonPrivate
     Qt5::PrintSupport
     Qt5::QuickWidgets
     Qt5::WebChannel
-    KF5::Archive
     ${OPENSSL_CRYPTO_LIBRARY}
 )

diff --git a/src/lib/app/browserwindow.cpp b/src/lib/app/browserwindow.cpp
index 5481f369..368bae43 100644
--- a/src/lib/app/browserwindow.cpp
+++ b/src/lib/app/browserwindow.cpp
@@ -81,7 +81,6 @@
 #ifdef QZ_WS_X11
 #include <QX11Info>
 #include <xcb/xcb.h>
-#include <xcb/xcb_atom.h>
 #endif

 static const int savedWindowVersion = 2;
diff --git a/src/lib/webengine/webpage.cpp b/src/lib/webengine/webpage.cpp
index 5037b1cb..af1461f8 100644
--- a/src/lib/webengine/webpage.cpp
+++ b/src/lib/webengine/webpage.cpp
@@ -42,7 +42,6 @@
 #include "ui_jsprompt.h"
 #include "passwordmanager.h"
 #include "scripts.h"
-#include "ocssupport.h"

 #include <iostream>

@@ -454,10 +453,6 @@ bool WebPage::acceptNavigationRequest(const QUrl &url, QWebEnginePage::Navigatio
         }
     }

-    if (url.scheme() == QL1S("ocs") && OcsSupport::instance()->handleUrl(url)) {
-        return false;
-    }
-
     const bool result = QWebEnginePage::acceptNavigationRequest(url, type, isMainFrame);

     if (result) {