Doc: NR removed deprecated snippet reference

[lilypond.git] / lily / system.cc

diff --git a/lily/system.cc b/lily/system.cc
index 5d3c0e33479e81ff608a7f8a92a14bd0beebcc09..c20f244890244432b9cdc7dad45e30072e454154 100644 (file)
--- a/lily/system.cc
+++ b/lily/system.cc
@@ -38,6 +38,7 @@
 #include "staff-symbol-referencer.hh"
 #include "text-interface.hh"
 #include "warn.hh"
+#include "unpure-pure-container.hh"
 
 System::System (System const &src)
   : Spanner (src)