diff --git a/CMakeLists.txt b/CMakeLists.txt
index 743ce31..8bb8797 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -82,12 +82,8 @@ set_package_properties(Xsltproc PROPERTIES DESCRIPTION "XSLT processor from libx
 
 ########### Targets ###########
 
-#add_definitions("-DQT_NO_CAST_FROM_ASCII -DQT_NO_CAST_TO_ASCII")
 add_definitions(-DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT)
-add_definitions("-DQT_NO_CAST_TO_ASCII")
-remove_definitions( -DQT_NO_CAST_FROM_ASCII )
 add_definitions(-DQT_DISABLE_DEPRECATED_BEFORE=0x060000)
-add_definitions(-DQT_NO_URL_CAST_FROM_STRING)
 
 ########### CMake Config Files ###########
 set(CMAKECONFIG_INSTALL_DIR "${KDE_INSTALL_CMAKEPACKAGEDIR}/KF5MailCommon")