diff --git a/Combinatorial_map/include/CGAL/Compact_container_with_index.h b/Combinatorial_map/include/CGAL/Compact_container_with_index.h
index abb1739303f..044db27dc87 100644
--- a/Combinatorial_map/include/CGAL/Compact_container_with_index.h
+++ b/Combinatorial_map/include/CGAL/Compact_container_with_index.h
@@ -767,7 +767,6 @@ public:
   void reserve(size_type n)
   {
     if(capacity_>=n) return;
-    capacity_=n;
     increase_size();
   }