diff --git a/MiniZincIDE/mainwindow.ui b/MiniZincIDE/mainwindow.ui
index f5bce01..995fdc4 100755
--- a/MiniZincIDE/mainwindow.ui
+++ b/MiniZincIDE/mainwindow.ui
@@ -15,7 +15,13 @@
   </property>
   <property name="windowIcon">
    <iconset resource="minizincide.qrc">
-    <normaloff>:/images/mznicon.png</normaloff>:/images/mznicon.png</iconset>
+    <normaloff>:/mznide.ico</normaloff>:/mznide.ico</iconset>
+  </property>
+  <property name="iconSize">
+   <size>
+    <width>256</width>
+    <height>256</height>
+   </size>
   </property>
   <property name="unifiedTitleAndToolBarOnMac">
    <bool>true</bool>
diff --git a/MiniZincIDE/minizincide.qrc b/MiniZincIDE/minizincide.qrc
index bfedaad..4066b09 100644
--- a/MiniZincIDE/minizincide.qrc
+++ b/MiniZincIDE/minizincide.qrc
@@ -4,6 +4,7 @@
         <file>images/about.html</file>
         <file>images/mznicon.png</file>
         <file>cheat_sheet.mzn</file>
+        <file>mznide.ico</file>
     </qresource>
     <qresource prefix="/icons">
         <file>images/document-new.png</file>