diff --git a/CMakeLists.txt b/CMakeLists.txt
index 283a9b4..b4952c3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,106 +1,107 @@
 #cmake < 3.1 has no sane way of checking C++11 features and needed flags
 cmake_minimum_required(VERSION 3.1 FATAL_ERROR)
 
 project(kdiff3)
 
 set(CMAKE_CXX_EXTENSIONS OFF ) #don't use non-standard extensions
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 set(ECM_MIN_VERSION "5.10.0")
 set(QT_MIN_VERSION "5.6.0")
 set(KF5_MIN_VERSION "5.23.0")
 
 find_package(ECM ${ECM_MIN_VERSION} CONFIG REQUIRED)
 set(
     CMAKE_MODULE_PATH
     ${CMAKE_MODULE_PATH}
     ${ECM_MODULE_PATH}
 )
 
 include(KDEInstallDirs)
 include(KDECompilerSettings NO_POLICY_SCOPE)
 include(KDECMakeSettings NO_POLICY_SCOPE)
 include(FeatureSummary)
 
 include(ECMInstallIcons)
 include(ECMAddAppIcon)
 include(ECMSetupVersion)
 
 ecm_setup_version(1.8.0 VARIABLE_PREFIX KDIFF3 VERSION_HEADER ${CMAKE_BINARY_DIR}/src/version.h)
 
 find_package(
     Qt5 ${QT_MIN_VERSION}
     CONFIG
     REQUIRED
     COMPONENTS
     Core
     Gui
     Widgets
     PrintSupport
 )
 
 find_package(
     KF5 ${KF5_MIN_VERSION}
     REQUIRED
     COMPONENTS
     I18n
     CoreAddons
     Crash
     DocTools
     IconThemes
 )
 
 option(ENABLE_CLANG_TIDY "Run clang-tidy if available and cmake version >=3.6" OFF)
 
 set(KDiff3_LIBRARIES ${Qt5PrintSupport_LIBRARIES} KF5::I18n KF5::CoreAddons KF5::Crash KF5::IconThemes )
 
 if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
     #Adjust clang specific  warnings
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wshadow")
     set(CLANG_WARNING_FLAGS "-Wno-invalid-pp-token -Wno-comment -Wshorten-64-to-32 -Wstring-conversion -Wc++11-narrowing -fstack-protector-all")
     set(CMAKE_CXX_FLAGS  "${CMAKE_CXX_FLAGS} ${CLANG_WARNING_FLAGS}")
 elseif(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
     add_definitions(-DNOMINMAX) #Suppress MSVCs min/max macros
 elseif(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fstack-check")
     if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 7.0)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wduplicated-cond -Wduplicated-branches -Wshadow")
     endif()
 endif()
 
 #new in cmake 3.6+ integrate clang-tidy
 if(ENABLE_CLANG_TIDY AND NOT ${CMAKE_VERSION} VERSION_LESS "3.6.0")
     find_program(CLANG_TIDY_EXE NAMES "clang-tidy" "clang-tidy-7" "clang-tidy-6.0" "clang-tidy-6" DOC "Path to clang-tidy executable")
     if(NOT CLANG_TIDY_EXE)
         message(STATUS "clang-tidy not found disabling integration.")
     else()
         message(STATUS "Found clang-tidy: ${CLANG_TIDY_EXE}")
         set(CMAKE_CXX_CLANG_TIDY "${CLANG_TIDY_EXE}" "-header-filter=.*")
     endif()
 endif()
 
 set(CMAKE_C_FLAGS  "${CMAKE_C_FLAGS} ${CMAKE_CXX_FLAGS}")
 
 set(
     needed_features
     cxx_nullptr
     cxx_override
     cxx_nonstatic_member_init
     cxx_inheriting_constructors
     cxx_static_assert
 )
 
 add_definitions(
     -DQT_DEPRECATED_WARNINGS #Get warnings from QT about deprecated functions.
-    -DQT_NO_URL_CAST_FROM_STRING #implict casting from string to url does not always behave as you might think
+    -DQT_NO_URL_CAST_FROM_STRING # casting from string to url does not always behave as you might think
     -DQT_RESTRICTED_CAST_FROM_ASCII #casting from char*/QByteArray to QString can produce unexpected results for non-latin characters.
+    -DQT_NO_CAST_TO_ASCII
 )
 
 add_subdirectory(src)
 add_subdirectory(doc)
 
 add_subdirectory(kdiff3fileitemactionplugin)
 
 ki18n_install(po)
 kdoctools_install(po)
 
 feature_summary(WHAT ALL FATAL_ON_MISSING_REQUIRED_PACKAGES)