diff --git a/src/calibre/gui2/dialogs/catalog.ui b/src/calibre/gui2/dialogs/catalog.ui
index 7f3951b87e..cf51ac8848 100644
--- a/src/calibre/gui2/dialogs/catalog.ui
+++ b/src/calibre/gui2/dialogs/catalog.ui
@@ -15,7 +15,7 @@
   </property>
   <property name="windowIcon">
    <iconset resource="../../../../resources/images.qrc">
-    <normaloff>:/images/library.png</normaloff>:/images/library.png</iconset>
+    <normaloff>:/images/lt.png</normaloff>:/images/lt.png</iconset>
   </property>
   <layout class="QGridLayout" name="gridLayout">
    <item row="0" column="0">
diff --git a/src/calibre/gui2/dialogs/confirm_delete_location.ui b/src/calibre/gui2/dialogs/confirm_delete_location.ui
index 212d96584f..f375eb7207 100644
--- a/src/calibre/gui2/dialogs/confirm_delete_location.ui
+++ b/src/calibre/gui2/dialogs/confirm_delete_location.ui
@@ -54,7 +54,7 @@
        </property>
        <property name="icon">
         <iconset resource="../../../../resources/images.qrc">
-         <normaloff>:/images/library.png</normaloff>:/images/library.png</iconset>
+         <normaloff>:/images/lt.png</normaloff>:/images/lt.png</iconset>
        </property>
       </widget>
      </item>
diff --git a/src/calibre/gui2/dialogs/conversion_error.ui b/src/calibre/gui2/dialogs/conversion_error.ui
index c51c868d1b..0b21147fee 100644
--- a/src/calibre/gui2/dialogs/conversion_error.ui
+++ b/src/calibre/gui2/dialogs/conversion_error.ui
@@ -14,7 +14,7 @@
   </property>
   <property name="windowIcon" >
    <iconset resource="../../../../resources/images.qrc" >
-    <normaloff>:/images/library.png</normaloff>:/images/library.png</iconset>
+    <normaloff>:/images/lt.png</normaloff>:/images/lt.png</iconset>
   </property>
   <layout class="QGridLayout" >
    <item row="0" column="0" >
diff --git a/src/calibre/gui2/layout.py b/src/calibre/gui2/layout.py
index eadf97191a..df277aa13c 100644
--- a/src/calibre/gui2/layout.py
+++ b/src/calibre/gui2/layout.py
@@ -255,7 +255,7 @@ class MainWindowMixin(object): # {{{
 
     def __init__(self, db):
         self.setObjectName('MainWindow')
-        self.setWindowIcon(QIcon(I('library.png')))
+        self.setWindowIcon(QIcon(I('lt.png')))
         self.setWindowTitle(__appname__)
 
         self.setContextMenuPolicy(Qt.NoContextMenu)
diff --git a/src/calibre/gui2/main.py b/src/calibre/gui2/main.py
index d787dbae58..9b80b7bddc 100644
--- a/src/calibre/gui2/main.py
+++ b/src/calibre/gui2/main.py
@@ -60,7 +60,7 @@ def init_qt(args):
     QCoreApplication.setApplicationName(APP_UID)
     app = Application(args)
     actions = tuple(Main.create_application_menubar())
-    app.setWindowIcon(QIcon(I('library.png')))
+    app.setWindowIcon(QIcon(I('lt.png')))
     return app, opts, args, actions
 
 
diff --git a/src/calibre/gui2/ui.py b/src/calibre/gui2/ui.py
index 713aa77e29..a597445f43 100644
--- a/src/calibre/gui2/ui.py
+++ b/src/calibre/gui2/ui.py
@@ -228,7 +228,7 @@ class Main(MainWindow, MainWindowMixin, DeviceMixin, EmailMixin, # {{{
         self.default_thumbnail = None
         self.tb_wrapper = textwrap.TextWrapper(width=40)
         self.viewers = collections.deque()
-        self.system_tray_icon = SystemTrayIcon(QIcon(I('library.png')), self)
+        self.system_tray_icon = SystemTrayIcon(QIcon(I('lt.png')), self)
         self.system_tray_icon.setToolTip('calibre')
         self.system_tray_icon.tooltip_requested.connect(
                 self.job_manager.show_tooltip)