Index: /trunk/src/VBox/Frontends/VirtualBox/src/main.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/main.cpp	(revision 58848)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/main.cpp	(revision 58849)
@@ -483,5 +483,9 @@
         bool isSubScaleable = fontDataBase.isScalable(subFamily);
         if (isCurrentScaleable && !isSubScaleable)
+#  if QT_VERSION >= 0x050000
+            QFont::removeSubstitutions(currentFamily);
+#  else /* QT_VERSION < 0x050000 */
             QFont::removeSubstitution(currentFamily);
+#  endif /* QT_VERSION < 0x050000 */
 # endif /* !Q_OS_SOLARIS */