diff --git a/bin/qasim-gui.rb b/bin/qasim-gui.rb
index a1a9eb4..3c41814 100755
--- a/bin/qasim-gui.rb
+++ b/bin/qasim-gui.rb
@@ -162,9 +162,7 @@ module Qasim
 			act_about.setIconVisibleInMenu true
 			act_about.setEnabled true
 			act_about.connect(SIGNAL(:triggered)) do 
-				puts "Show about dialog!"
-				dialog = Qasim::Ui::About.new
-				dialog.show
+				res = @about_dialog.show
 			end
 			@context_menu.addAction act_about;
 
@@ -184,26 +182,30 @@ module Qasim
 		def build_interface
 
 			@app = Qt::Application.new(ARGV)
-			si  = Qt::SystemTrayIcon.new
+			#Qt.debug_level = Qt::DebugLevel::High
+			#Qt.debug_level = Qt::DebugLevel::Extensive
+			@app.setQuitOnLastWindowClosed false
+
+			@main_win = Qt::MainWindow.new
+			@systray  = Qt::SystemTrayIcon.new @main_win
+			@about_dialog = Qasim::Ui::About.new @main_win
 
 			std_icon = Qt::Icon.new( ":/qasim/qasim-icon" )
-			#std_icon = Qt::Icon.new( File.join APP_ICON_PATH, "qasim.svg" )
-			#std_icon = Qt::Icon.new
 			alt_icon = Qt::Icon.new
 			blinking = false
 
-			si.icon  = std_icon
-			si.show
+			@systray.icon  = std_icon
+			@systray.show
 
 
-			si.setToolTip("Qasim %s" % APP_VERSION);
+			@systray.setToolTip("Qasim %s" % APP_VERSION);
 
 			build_map_menu
 			build_context_menu
 
-			si.contextMenu = @context_menu
+			@systray.contextMenu = @context_menu
 
-			si.connect(SIGNAL('activated(QSystemTrayIcon::ActivationReason)')) do |reason|
+			@systray.connect(SIGNAL('activated(QSystemTrayIcon::ActivationReason)')) do |reason|
 				case reason
 				when Qt::SystemTrayIcon::Trigger then
 					build_map_menu
diff --git a/lib/qasim/ui/about.rb b/lib/qasim/ui/about.rb
index 3a5bed7..9d646d8 100644
--- a/lib/qasim/ui/about.rb
+++ b/lib/qasim/ui/about.rb
@@ -50,7 +50,9 @@ module Qasim ; module Ui
 				# FIXME handle error on licence reading
 			end
 
-			#FIXME: set first tab
+			# set first tab
+			@ui.tab_widget.setCurrentIndex(0)
 		end
+
 	end
 end ; end
diff --git a/lib/qasim/ui/about.ui b/lib/qasim/ui/about.ui
index f9bf9da..11b629e 100644
--- a/lib/qasim/ui/about.ui
+++ b/lib/qasim/ui/about.ui
@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>519</width>
-    <height>461</height>
+    <width>470</width>
+    <height>500</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -53,19 +53,7 @@
       </layout>
      </item>
      <item>
-      <widget class="QTabWidget" name="tabWidget">
-       <property name="enabled">
-        <bool>true</bool>
-       </property>
-       <property name="minimumSize">
-        <size>
-         <width>400</width>
-         <height>300</height>
-        </size>
-       </property>
-       <property name="styleSheet">
-        <string notr="true"/>
-       </property>
+      <widget class="QTabWidget" name="tab_widget">
        <property name="currentIndex">
         <number>0</number>
        </property>
@@ -105,7 +93,7 @@
         <attribute name="title">
          <string>Authors</string>
         </attribute>
-        <layout class="QVBoxLayout" name="verticalLayout_3">
+        <layout class="QVBoxLayout" name="_2">
          <item>
           <widget class="QTextEdit" name="authors_textedit">
            <property name="sizePolicy">
@@ -182,17 +170,17 @@ p, li { white-space: pre-wrap; }
  <connections>
   <connection>
    <sender>button_box</sender>
-   <signal>accepted()</signal>
+   <signal>clicked(QAbstractButton*)</signal>
    <receiver>About</receiver>
-   <slot>close()</slot>
+   <slot>accept()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>259</x>
-     <y>441</y>
+     <x>463</x>
+     <y>493</y>
     </hint>
     <hint type="destinationlabel">
-     <x>259</x>
-     <y>230</y>
+     <x>469</x>
+     <y>12</y>
     </hint>
    </hints>
   </connection>