Index: /applications/editors/josm/plugins/michigan_left/src/MichiganLeft/MichiganLeftAction.java
===================================================================
--- /applications/editors/josm/plugins/michigan_left/src/MichiganLeft/MichiganLeftAction.java	(revision 20660)
+++ /applications/editors/josm/plugins/michigan_left/src/MichiganLeft/MichiganLeftAction.java	(revision 20661)
@@ -31,5 +31,5 @@
     public MichiganLeftAction() {
     super(tr("Michigan Left"), "michigan_left", tr("Adds no left turn for sets of 4 or 5 ways."), Shortcut.registerShortcut("tools:michigan_left", tr("Tool: {0}", tr("Michigan Left")),
-    KeyEvent.VK_M, Shortcut.GROUP_EDIT, Shortcut.SHIFT_DEFAULT), true);
+    KeyEvent.VK_M, Shortcut.GROUP_EDIT, KeyEvent.SHIFT_DOWN_MASK|KeyEvent.ALT_DOWN_MASK), true);
   }