diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0587349..886f9f5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,72 +1,79 @@
 cmake_minimum_required(VERSION 2.8.12)
 
 project(controlflowgraph)
 
 find_package(ECM 1.0 REQUIRED NO_MODULE)
 set(CMAKE_MODULE_PATH
     ${ECM_MODULE_PATH}
     ${ECM_KDE_MODULE_DIR}
     ${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules
 )
 
 include(KDECompilerSettings NO_POLICY_SCOPE)
 include(KDEInstallDirs)
 include(KDECMakeSettings)
 include(FeatureSummary)
 
-set(QT_MIN_VERSION "5.4.0")
+set(QT_MIN_VERSION "5.5.0")
 find_package(Qt5 ${QT_MIN_VERSION} CONFIG REQUIRED Core Widgets)
 set(KF5_DEP_VERSION "5.18.0")
 find_package(KF5 ${KF5_DEP_VERSION} REQUIRED COMPONENTS
     I18n
     TextEditor
     ThreadWeaver
     ConfigWidgets
     ItemModels
 )
 find_package(KDevPlatform 5.1.40 )
 set_package_properties(KDevPlatform PROPERTIES
     TYPE REQUIRED
 )
 find_package(GraphViz)
 set_package_properties(GraphViz PROPERTIES
     TYPE REQUIRED
 )
 
+add_definitions(
+    -DQT_DEPRECATED_WARNINGS
+    -DQT_DISABLE_DEPRECATED_BEFORE=0x050500
+    -DQT_NO_SIGNALS_SLOTS_KEYWORDS
+    -DQT_STRICT_ITERATORS
+)
+
 
 include_directories(
     ${GraphViz_INCLUDE_DIRECTORIES}
 )
 
 set(kdevcontrolflowgraphview_PART_SRCS
     kdevcontrolflowgraphviewplugin.cpp
     controlflowgraphview.cpp
     duchaincontrolflow.cpp
     dotcontrolflowgraph.cpp
     duchaincontrolflowjob.cpp
     duchaincontrolflowinternaljob.cpp
     controlflowgraphnavigationcontext.cpp
     controlflowgraphnavigationwidget.cpp
     controlflowgraphusescollector.cpp
     controlflowgraphfiledialog.cpp
 )
 
 set(kdevcontrolflowgraphview_PART_UI
     controlflowgraphview.ui
     controlflowgraphexportconfiguration.ui
 )
 
 ki18n_wrap_ui(kdevcontrolflowgraphview_PART_SRCS ${kdevcontrolflowgraphview_PART_UI})
 
 kdevplatform_add_plugin(kdevcontrolflowgraphview JSON kdevcontrolflowgraphview.json SOURCES ${kdevcontrolflowgraphview_PART_SRCS})
 target_link_libraries(kdevcontrolflowgraphview
     KF5::Parts
     KF5::TextEditor
     KF5::ThreadWeaver
     KDev::Interfaces
     KDev::Language
     KDev::Project
     KDev::Util
     gvc cgraph cdt)
 
 feature_summary(WHAT ALL INCLUDE_QUIET_PACKAGES FATAL_ON_MISSING_REQUIRED_PACKAGES)
diff --git a/duchaincontrolflowinternaljob.h b/duchaincontrolflowinternaljob.h
index fcef775..749b985 100644
--- a/duchaincontrolflowinternaljob.h
+++ b/duchaincontrolflowinternaljob.h
@@ -1,54 +1,54 @@
 /***************************************************************************
  *   Copyright 2009 Sandro Andrade <sandroandrade@kde.org>                 *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
  *   it under the terms of the GNU Library General Public License as       *
  *   published by the Free Software Foundation; either version 2 of the    *
  *   License, or (at your option) any later version.                       *
  *                                                                         *
  *   This program is distributed in the hope that it will be useful,       *
  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  *   GNU General Public License for more details.                          *
  *                                                                         *
  *   You should have received a copy of the GNU Library General Public     *
  *   License along with this program; if not, write to the                 *
  *   Free Software Foundation, Inc.,                                       *
  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
  ***************************************************************************/
 
 #ifndef DUCHAINCONTROLFLOWINTERNALJOB_H
 #define DUCHAINCONTROLFLOWINTERNALJOB_H
 
 #include <ThreadWeaver/Job>
 #include <QObject>
 
 class DUChainControlFlow;
 class KDevControlFlowGraphViewPlugin;
 
 class DUChainControlFlowInternalJob : public QObject, public ThreadWeaver::Job
 {
     Q_OBJECT
 
 public:
     DUChainControlFlowInternalJob(DUChainControlFlow *duchainControlFlow, KDevControlFlowGraphViewPlugin *plugin);
     ~DUChainControlFlowInternalJob() override;
 
     enum ControlFlowJobType { ControlFlowJobInteractive, ControlFlowJobBatchForFunction, ControlFlowJobBatchForClass, ControlFlowJobBatchForProject };
     void setControlFlowJobType (ControlFlowJobType controlFlowJobType);
 
     void requestAbort() override;
 
-signals:
+Q_SIGNALS:
     void done();
 
 protected:
     void run(ThreadWeaver::JobPointer self, ThreadWeaver::Thread *thread) override;
 
 private:
     DUChainControlFlow *m_duchainControlFlow;
     KDevControlFlowGraphViewPlugin *m_plugin;
     ControlFlowJobType m_controlFlowJobType;
 };
 
 #endif