diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 8b2dc2c2f..659a0a2f1 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,146 +1,145 @@
 
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/config-kcalcore.h.cmake
     ${CMAKE_CURRENT_BINARY_DIR}/config-kcalcore.h
 )
 
 ########### next target ###############
 
 bison_target(VersitParser
   ${CMAKE_CURRENT_SOURCE_DIR}/versit/vcc.y
   ${CMAKE_CURRENT_BINARY_DIR}/vcc-parser.c
 )
 
 set(libversit_SRCS
   ${CMAKE_CURRENT_SOURCE_DIR}/versit/vobject.c
   ${BISON_VersitParser_OUTPUTS}
 )
 
 set(kcalcore_LIB_SRCS
   ${libversit_SRCS}
   alarm.cpp
   attachment.cpp
   attendee.cpp
   calendar.cpp
   calfilter.cpp
   calformat.cpp
   calstorage.cpp
   compat.cpp
   customproperties.cpp
   duration.cpp
   event.cpp
   exceptions.cpp
   filestorage.cpp
   freebusy.cpp
   freebusycache.cpp
   freebusyperiod.cpp
   icalformat.cpp
   icalformat_p.cpp
   icaltimezones.cpp
   incidence.cpp
   incidencebase.cpp
   journal.cpp
   memorycalendar.cpp
   occurrenceiterator.cpp
   period.cpp
   person.cpp
   recurrence.cpp
   recurrencerule.cpp
   schedulemessage.cpp
   sorting.cpp
   todo.cpp
   utils.cpp
   vcalformat.cpp
   visitor.cpp
 )
 ecm_qt_declare_logging_category(kcalcore_LIB_SRCS HEADER kcalcore_debug.h IDENTIFIER KCALCORE_LOG CATEGORY_NAME org.kde.pim.kcalcore)
 
 add_library(KF5CalendarCore ${kcalcore_LIB_SRCS})
 
 generate_export_header(KF5CalendarCore BASE_NAME kcalcore)
 
 add_library(KF5::CalendarCore ALIAS KF5CalendarCore)
 
 target_include_directories(KF5CalendarCore INTERFACE "$<INSTALL_INTERFACE:${KDE_INSTALL_INCLUDEDIR_KF5}/KCalCore;${LibIcal_INCLUDE_DIRS};${LibIcal_INCLUDE_DIRS}/libical>")
 target_include_directories(KF5CalendarCore PUBLIC "$<BUILD_INTERFACE:${KCalCore_SOURCE_DIR}/src;${KCalCore_BINARY_DIR}/src;${KCalCore_SOURCE_DIR}/src/versit>")
 target_include_directories(KF5CalendarCore PUBLIC "$<BUILD_INTERFACE:${LibIcal_INCLUDE_DIRS};${LibIcal_INCLUDE_DIRS}/libical>")
 
 target_link_libraries(KF5CalendarCore
 PUBLIC
     KF5::KDELibs4Support
     ${LibIcal_LIBRARIES}
 )
 
 if(HAVE_UUID_LIBRARY)
   target_link_libraries(KF5CalendarCore
 PRIVATE
       ${UUID_LIBRARY}
   )
 endif()
 
 set_target_properties(KF5CalendarCore PROPERTIES
     VERSION ${KCALCORE_VERSION_STRING}
     SOVERSION ${KCALCORE_SOVERSION}
     EXPORT_NAME CalendarCore
 )
 
 install(TARGETS KF5CalendarCore EXPORT KF5CalendarCoreTargets ${KF5_INSTALL_TARGETS_DEFAULT_ARGS})
 
 ########### Generate Headers ###############
 ecm_generate_headers(KCalCore_CamelCase_HEADERS
   HEADER_NAMES
   Alarm
   Attachment
   Attendee
   CalFilter
   CalFormat
   CalStorage
   Calendar
   CustomProperties
   Duration
   Event
   Exceptions # NOTE: Used to be called 'Exception' in KDE4
   FileStorage
   FreeBusy
   FreeBusyCache
   FreeBusyPeriod
   ICalFormat
-  ICalTimeZones
   Incidence
   IncidenceBase
   Journal
   MemoryCalendar
   OccurrenceIterator
   Period
   Person
   Recurrence
   RecurrenceRule
   ScheduleMessage
   SortableList
   Sorting
   Todo
   Utils
   VCalFormat
   Visitor
 
   PREFIX KCalCore
   REQUIRED_HEADERS KCalCore_HEADERS
 )
 
 ########### install files ###############
 
 install(FILES
   ${CMAKE_CURRENT_BINARY_DIR}/kcalcore_export.h
   ${KCalCore_HEADERS}
   supertrait.h
   DESTINATION ${KDE_INSTALL_INCLUDEDIR_KF5}/KCalCore/kcalcore
   COMPONENT Devel
 )
 
 install(FILES
   ${KCalCore_CamelCase_HEADERS}
   DESTINATION ${KDE_INSTALL_INCLUDEDIR_KF5}/KCalCore/KCalCore
   COMPONENT Devel
 )
 
 ecm_generate_pri_file(BASE_NAME KCalCore LIB_NAME KF5CalendarCore DEPS "ItemViews KDELibs4Support" FILENAME_VAR PRI_FILENAME INCLUDE_INSTALL_DIR ${KDE_INSTALL_INCLUDEDIR_KF5}/KCalCore/KCalCore)
 install(FILES ${PRI_FILENAME} DESTINATION ${ECM_MKSPECS_INSTALL_DIR})