diff --git a/qml/Key.qml b/qml/Key.qml
index a144cc6..19f6cb4 100644
--- a/qml/Key.qml
+++ b/qml/Key.qml
@@ -161,7 +161,7 @@ Rectangle {
         keyRepeatStarter.stop();
         keyRepeatTimer.stop();
         key.color = keyboard.keyBgColor;
-        keyboard.currentKeyPressed = 0;
+        keyboard.currentKeyPressed = null;
 
         if (sticky && !becomesSticky) {
             keyboard.keyModifiers &= ~code
@@ -184,7 +184,7 @@ Rectangle {
             }
 
             // first non-sticky press will cause the sticky to be released
-            if( !sticky && keyboard.resetSticky != 0 && keyboard.resetSticky !== key ) {
+            if( !sticky && keyboard.resetSticky && keyboard.resetSticky !== key ) {
                 resetSticky.setStickiness(0);
             }
         }
@@ -211,7 +211,7 @@ Rectangle {
     function setStickiness(val)
     {
         if(sticky) {
-            if( keyboard.resetSticky != 0 && keyboard.resetSticky !== key ) {
+            if( keyboard.resetSticky && keyboard.resetSticky !== key ) {
                 resetSticky.setStickiness(0)
             }
 
@@ -230,7 +230,7 @@ Rectangle {
                 keyboard.keyModifiers &= ~code
             }
 
-            keyboard.resetSticky = 0
+            keyboard.resetSticky = null
 
             if(stickiness==1) {
                 stickIndicator.anchors.topMargin = key.height/2
diff --git a/qml/Keyboard.qml b/qml/Keyboard.qml
index 1eeb707..c84c2af 100644
--- a/qml/Keyboard.qml
+++ b/qml/Keyboard.qml
@@ -23,9 +23,9 @@ Item {
     id: keyboard
 
     property int keyModifiers
-    property variant resetSticky: 0
-    property variant currentStickyPressed: null
-    property variant currentKeyPressed: 0
+    property Key resetSticky
+    property Key currentStickyPressed
+    property Key currentKeyPressed
 
     property string keyFgColor: "#ffffff"
     property string keyBgColor: "#202020"
@@ -59,10 +59,11 @@ Item {
                     spacing: keyboard.keyspacing
                     Repeater {
                         id: colRepeater
+
                         property int rowIndex: index
                         model: keyLoader.vkbColumns()
                         delegate: Key {
-                            property variant keydata: keyLoader.keyAt(colRepeater.rowIndex, index)
+                            property var keydata: keyLoader.keyAt(colRepeater.rowIndex, index)
                             label: keydata[0]
                             code: keydata[1]
                             label_alt: keydata[2]
@@ -85,7 +86,7 @@ Item {
     }
 
     onCurrentKeyPressedChanged: {
-        if(currentKeyPressed != 0 && currentKeyPressed.currentLabel.length === 1 && currentKeyPressed.currentLabel !== " ") {
+        if(currentKeyPressed && currentKeyPressed.currentLabel.length === 1 && currentKeyPressed.currentLabel !== " ") {
             visualKeyFeedbackRect.label = currentKeyPressed.currentLabel
             visualKeyFeedbackRect.width = currentKeyPressed.width*1.5
             visualKeyFeedbackRect.height = currentKeyPressed.height*1.5
@@ -111,6 +112,7 @@ Item {
                     Qt.quit();
                 }
             }
+            keyboard.keyModifiers = 0
             // makes the keyboard component reload itself with new data
             keyboardLoader.sourceComponent = undefined
             keyboardLoader.sourceComponent = keyboardContents
diff --git a/qml/LayoutWindow.qml b/qml/LayoutWindow.qml
index c508c12..4a55be4 100644
--- a/qml/LayoutWindow.qml
+++ b/qml/LayoutWindow.qml
@@ -22,7 +22,7 @@ import QtQuick 2.0
 PopupWindow {
     id: layoutWindow
 
-    property variant layouts: [""]
+    property var layouts: [""]
 
     Component {
         id: listDelegate
diff --git a/qml/Lineview.qml b/qml/Lineview.qml
index 388415f..89fd0e0 100644
--- a/qml/Lineview.qml
+++ b/qml/Lineview.qml
@@ -23,7 +23,7 @@ import FingerTerm 1.0
 Rectangle {
     id: lineView
 
-    property variant lines: [""]
+    property var lines: [""]
     property int fontPointSize: util.fontSize
     property int cursorX: 1
     property int cursorWidth: 10
diff --git a/qml/UrlWindow.qml b/qml/UrlWindow.qml
index 0720780..e1ae407 100644
--- a/qml/UrlWindow.qml
+++ b/qml/UrlWindow.qml
@@ -22,7 +22,7 @@ import QtQuick 2.0
 PopupWindow {
     id: urlWindow
 
-    property variant urls: [""]
+    property var urls: [""]
 
     Component {
         id: listDelegate