diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,7 @@
 project(kmplot)
 cmake_minimum_required (VERSION 3.5 FATAL_ERROR)
-set (QT_MIN_VERSION "5.3.0")
+set (QT_MIN_VERSION "5.6.0")
+set (KF5_MIN_VERSION "5.32.0")
 
 find_package (ECM 1.3.0 REQUIRED NO_MODULE)
 set (CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${ECM_MODULE_PATH} ${ECM_KDE_MODULE_DIR})
@@ -14,7 +15,7 @@
 
 find_package(Qt5 ${QT_MIN_VERSION} CONFIG REQUIRED COMPONENTS Core Gui Svg Widgets PrintSupport)
 
-find_package (KF5 REQUIRED
+find_package (KF5 ${KF5_MIN_VERSION} REQUIRED COMPONENTS
     Crash
     GuiAddons
     I18n
diff --git a/kmplot/equationeditwidget.h b/kmplot/equationeditwidget.h
--- a/kmplot/equationeditwidget.h
+++ b/kmplot/equationeditwidget.h
@@ -36,6 +36,7 @@
 class EquationEditWidget : public KTextEdit
 {
 	public:
+		Q_PROPERTY(QString document READ document NOTIFY textEdited USER true)
 		explicit EquationEditWidget(EquationEdit* parent);
 		
 		/**
diff --git a/kmplot/maindlg.cpp b/kmplot/maindlg.cpp
--- a/kmplot/maindlg.cpp
+++ b/kmplot/maindlg.cpp
@@ -183,10 +183,6 @@
 	connect( m_saveCurrentStateTimer, &QTimer::timeout, this, &MainDlg::saveCurrentState );
 	//END undo/redo stuff
 
-
-
-	// Allow config manager to read from equation edits
-	KConfigDialogManager::changedMap()->insert( "EquationEdit", SIGNAL(textEdited(QString)) );
 	// Let's create a Configure Dialog
 	m_settingsDialog = new KConfigDialog( parentWidget, "settings", Settings::self() );