Index: applications/editors/josm/plugins/utilsplugin2/src/utilsplugin2/SymmetryAction.java
===================================================================
--- applications/editors/josm/plugins/utilsplugin2/src/utilsplugin2/SymmetryAction.java	(revision 26393)
+++ applications/editors/josm/plugins/utilsplugin2/src/utilsplugin2/SymmetryAction.java	(revision 26395)
@@ -36,5 +36,5 @@
         super(tr("Symmetry"), "symmetry", tr("Mirror selected nodes and ways."),
                 Shortcut.registerShortcut("tools:symmetry", tr("Tool: {0}", tr("Symmetry")),
-                        KeyEvent.VK_S, Shortcut.GROUP_EDIT, KeyEvent.ALT_DOWN_MASK), true);
+                        KeyEvent.VK_S, Shortcut.GROUP_EDIT,  KeyEvent.SHIFT_DOWN_MASK|KeyEvent.ALT_DOWN_MASK ), true);
         putValue("help", ht("/Action/Symmtry"));
     }