Index: /trunk/src/VBox/Frontends/VirtualBox/src/medium/UIMedium.h
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/medium/UIMedium.h	(revision 61861)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/medium/UIMedium.h	(revision 61862)
@@ -258,5 +258,5 @@
       * @note The medium is considered 'hidden' if it has corresponding
       *       medium property or is connected to 'hidden' VMs only. */
-    bool isHidden() const { return m_fHidden | m_fUsedByHiddenMachinesOnly; }
+    bool isHidden() const { return m_fHidden || m_fUsedByHiddenMachinesOnly; }
 
     /** Returns whether this medium is read-only