diff --git a/CMakeLists.txt b/CMakeLists.txt
index 804f61a93..b0d898c16 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,27 +1,37 @@
 cmake_minimum_required(VERSION 3.0)
 
 project(KDialog)
 
 # ECM setup
 find_package(ECM 1.7.0 CONFIG REQUIRED)
 set(CMAKE_MODULE_PATH ${ECM_MODULE_PATH})
 
 include(FeatureSummary)
 include(KDEInstallDirs)
 include(KDECMakeSettings)
 include(KDEFrameworkCompilerSettings NO_POLICY_SCOPE)
 
 # Build dependencies
 find_package(KF5 REQUIRED COMPONENTS TextWidgets Notifications GuiAddons IconThemes WindowSystem KIO DBusAddons)
 find_package(Qt5DBus CONFIG)
 
 find_package(X11)
 if(X11_FOUND)
    set(HAVE_X11 1)
 endif()
 
-add_definitions(-DQT_NO_URL_CAST_FROM_STRING)
+add_definitions(
+    -DQT_DEPRECATED_WARNINGS
+    -DQT_USE_QSTRINGBUILDER
+    -DQT_NO_CAST_TO_ASCII
+    -DQT_NO_CAST_FROM_ASCII
+    -DQT_NO_CAST_FROM_BYTEARRAY
+    -DQT_STRICT_ITERATORS
+    -DQT_NO_URL_CAST_FROM_STRING
+    -DQT_NO_SIGNALS_SLOTS_KEYWORDS
+    -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT
+)
 
 add_subdirectory(src)
 
 feature_summary(WHAT ALL FATAL_ON_MISSING_REQUIRED_PACKAGES)