diff --git a/STL_Extension/include/CGAL/Compact_container.h b/STL_Extension/include/CGAL/Compact_container.h
index 9425b904e44..6664de00762 100644
--- a/STL_Extension/include/CGAL/Compact_container.h
+++ b/STL_Extension/include/CGAL/Compact_container.h
@@ -31,7 +31,6 @@
 #include <CGAL/iterator.h>
 #include <CGAL/CC_safe_handle.h>
 #include <CGAL/Time_stamper.h>
-#include <CGAL/IO/io.h>
 #include <CGAL/Has_member.h>
 #include <CGAL/assertions.h>
 #include <CGAL/IO/io.h>