diff --git a/interface/wx/combobox.h b/interface/wx/combobox.h
index 7c67126551..7c2d4314d6 100644
--- a/interface/wx/combobox.h
+++ b/interface/wx/combobox.h
@@ -38,8 +38,7 @@
            allows the user to choose from the list of options but doesn't allow
            to enter a value not present in the list.
     @style{wxCB_SORT}
-           Sorts the entries in the list alphabetically. Notice that this style
-           is not currently implemented in wxOSX.
+           Sorts the entries in the list alphabetically.
     @style{wxTE_PROCESS_ENTER}
            The control will generate the event @c wxEVT_TEXT_ENTER that can be
            handled by the program. Otherwise, i.e. either if this style not
diff --git a/src/osx/cocoa/combobox.mm b/src/osx/cocoa/combobox.mm
index 84fd62cb2a..71aa165d44 100644
--- a/src/osx/cocoa/combobox.mm
+++ b/src/osx/cocoa/combobox.mm
@@ -264,7 +264,23 @@ int wxNSComboBoxControl::GetNumberOfItems() const
 
 void wxNSComboBoxControl::InsertItem(int pos, const wxString& item)
 {
-    [m_comboBox insertItemWithObjectValue:wxCFStringRef( item , m_wxPeer->GetFont().GetEncoding() ).AsNSString() atIndex:pos];
+    wxCFStringRef itemLabel(  item, m_wxPeer->GetFont().GetEncoding() );
+    NSString* const cocoaStr = itemLabel.AsNSString();
+
+    if ( m_wxPeer->HasFlag(wxCB_SORT) )
+    {
+        NSArray* const objectValues = m_comboBox.objectValues;
+
+        pos = [objectValues indexOfObject: cocoaStr
+                            inSortedRange: NSMakeRange(0, objectValues.count)
+                            options: NSBinarySearchingInsertionIndex
+                            usingComparator: ^(id obj1, id obj2)
+                                {
+                                    return [obj1 caseInsensitiveCompare: obj2];
+                                }];
+    }
+
+    [m_comboBox insertItemWithObjectValue:cocoaStr atIndex:pos];
 }
 
 void wxNSComboBoxControl::RemoveItem(int pos)