diff --git a/CHANGES.rst b/CHANGES.rst
index a7753e2f9..c4eb00bb6 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -6,6 +6,9 @@ There's a frood who really knows where his towel is.
 1.6b2 (unreleased)
 ^^^^^^^^^^^^^^^^^^
 
+- Use correct ``image/x-icon`` MIME type for ICO file format (fixes `#750 <https://github.com/collective/collective.cover/issues/750>`_).
+  [hvelarde]
+
 - Fix IDatetimeWidget tile override if using plone.app.contenttypes >= 1.1.1:
   collective.z3cform.datetimewidget is merged into plone.formwidget.datetime,
   so the zcml must override the template from plone.formwidget.datetime.z3cform.interfaces.IDatetimeWidget
diff --git a/src/collective/cover/static/css/contentchooser.css b/src/collective/cover/static/css/contentchooser.css
index 155af59c7..037f45eda 100644
--- a/src/collective/cover/static/css/contentchooser.css
+++ b/src/collective/cover/static/css/contentchooser.css
@@ -48,7 +48,7 @@
     list-style-type: none;
     list-style-image: none;
 
-    cursor: url('data:image/vnd.microsoft.icon;base64,AAACAAEAICACAAcABQAwAQAAFgAAACgAAAAgAAAAQAAAAAEAAQAAAAAAAAEAAAAAAAAAAAAAAgAAAAAAAAAAAAAA////AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD8AAAA/AAAAfwAAAP+AAAH/gAAB/8AAA//AAAd/wAAGf+AAAH9gAADbYAAA2yAAAZsAAAGbAAAAGAAAAAAAAA//////////////////////////////////////////////////////////////////////////////////////gH///4B///8Af//+AD///AA///wAH//4AB//8AAf//AAD//5AA///gAP//4AD//8AF///AB///5A////5///8='), all-scroll;
+    cursor: url('data:image/x-icon;base64,AAACAAEAICACAAcABQAwAQAAFgAAACgAAAAgAAAAQAAAAAEAAQAAAAAAAAEAAAAAAAAAAAAAAgAAAAAAAAAAAAAA////AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD8AAAA/AAAAfwAAAP+AAAH/gAAB/8AAA//AAAd/wAAGf+AAAH9gAADbYAAA2yAAAZsAAAGbAAAAGAAAAAAAAA//////////////////////////////////////////////////////////////////////////////////////gH///4B///8Af//+AD///AA///wAH//4AB//8AAf//AAD//5AA///gAP//4AD//8AF///AB///5A////5///8='), all-scroll;
     cursor: -webkit-grab;
     cursor:    -moz-grab;
     cursor:      -o-grab;
@@ -58,7 +58,7 @@
 
 #contentchooser-content-search .item-list li.ui-draggable-dragging
 {
-    cursor: url('data:image/vnd.microsoft.icon;base64,AAACAAEAICACAAcABQAwAQAAFgAAACgAAAAgAAAAQAAAAAEAAQAAAAAAAAEAAAAAAAAAAAAAAgAAAAAAAAAAAAAA////AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD8AAAA/AAAAfwAAAP+AAAH/gAAB/8AAAH/AAAB/wAAA/0AAANsAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA//////////////////////////////////////////////////////////////////////////////////////gH///4B///8Af//+AD///AA///wAH//+AB///wAf//4AH//+AD///yT/////////////////////////////8='), all-scroll;
+    cursor: url('data:image/x-icon;base64,AAACAAEAICACAAcABQAwAQAAFgAAACgAAAAgAAAAQAAAAAEAAQAAAAAAAAEAAAAAAAAAAAAAAgAAAAAAAAAAAAAA////AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD8AAAA/AAAAfwAAAP+AAAH/gAAB/8AAAH/AAAB/wAAA/0AAANsAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA//////////////////////////////////////////////////////////////////////////////////////gH///4B///8Af//+AD///AA///wAH//+AB///wAf//4AH//+AD///yT/////////////////////////////8='), all-scroll;
     cursor: -webkit-grabbing;
     cursor:    -moz-grabbing;
     cursor:      -o-grabbing;
diff --git a/src/collective/cover/tests/test_upgrades.py b/src/collective/cover/tests/test_upgrades.py
index a2a216138..7aab454ac 100644
--- a/src/collective/cover/tests/test_upgrades.py
+++ b/src/collective/cover/tests/test_upgrades.py
@@ -653,4 +653,4 @@ def setUp(self):
     def test_registrations(self):
         version = self.setup.getLastVersionForProfile(self.profile_id)[0]
         self.assertGreaterEqual(int(version), int(self.to_version))
-        self.assertEqual(self._how_many_upgrades_to_do(), 1)
+        self.assertEqual(self._how_many_upgrades_to_do(), 2)
diff --git a/src/collective/cover/upgrades/v18/configure.zcml b/src/collective/cover/upgrades/v18/configure.zcml
index 7b96c4cb6..8aa594d9a 100644
--- a/src/collective/cover/upgrades/v18/configure.zcml
+++ b/src/collective/cover/upgrades/v18/configure.zcml
@@ -9,6 +9,12 @@
       destination="18"
       profile="collective.cover:default">
 
+    <genericsetup:upgradeStep
+        title="Cook CSS resources"
+        description="There were changes in the CSS files, so we need to cook the resources."
+        handler="..cook_css_resources"
+        />
+
     <genericsetup:upgradeStep
         title="Cook JS resources"
         description="There were changes in the JS files, so we need to cook the resources."