diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -42,6 +42,7 @@
 set(EVENTVIEW_LIB_VERSION "5.14.40")
 set(AKONADI_VERSION "5.14.40")
 set(AKONADICONTACT_LIB_VERSION "5.14.40")
+set(AKONADICALENDAR_LIB_VERSION "5.14.41")
 
 set(KDIAGRAM_LIB_VERSION "1.4.0")
 find_package(KGantt ${KDIAGRAM_LIB_VERSION} CONFIG REQUIRED)
@@ -64,6 +65,7 @@
 find_package(KF5CalendarCore ${KF5_MIN_VERSION} CONFIG REQUIRED)
 find_package(KF5MailTransportAkonadi ${KMAILTRANSPORT_LIB_VERSION} CONFIG REQUIRED)
 find_package(KF5AkonadiContact ${AKONADICONTACT_LIB_VERSION} CONFIG REQUIRED)
+find_package(KF5AkonadiCalendar ${AKONADICALENDAR_LIB_VERSION} CONFIG REQUIRED)
 
 ecm_setup_version(PROJECT VARIABLE_PREFIX INCIDENCEEDITOR
                         VERSION_HEADER "${CMAKE_CURRENT_BINARY_DIR}/incidenceeditor_version.h"
diff --git a/src/incidencedialog.cpp b/src/incidencedialog.cpp
--- a/src/incidencedialog.cpp
+++ b/src/incidencedialog.cpp
@@ -45,6 +45,7 @@
 #include <CollectionComboBox>
 #include <Item>
 #include <Akonadi/Calendar/ETMCalendar>
+#include <AkonadiCore/EntityTreeModel>
 
 #include <KCalendarCore/ICalFormat>
 #include <KCalendarCore/MemoryCalendar>
@@ -128,7 +129,7 @@
 IncidenceDialogPrivate::IncidenceDialogPrivate(Akonadi::IncidenceChanger *changer, IncidenceDialog *qq)
     : q_ptr(qq)
     , mUi(new Ui::EventOrTodoDesktop)
-    , mCalSelector(new Akonadi::CollectionComboBox)
+    , mCalSelector(new Akonadi::CollectionComboBox(changer->entityTreeModel()))
     , mCloseOnSave(false)
     , mItemManager(new EditorItemManager(this, changer))
     , mEditor(new CombinedIncidenceEditor(qq))