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-rw-r--r--src/linkgraph/linkgraph.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/linkgraph/linkgraph.h b/src/linkgraph/linkgraph.h
index 5eb85e4c3..a11b67a52 100644
--- a/src/linkgraph/linkgraph.h
+++ b/src/linkgraph/linkgraph.h
@@ -527,7 +527,8 @@ protected:
friend class LinkGraph::Node;
friend SaveLoadTable GetLinkGraphDesc();
friend SaveLoadTable GetLinkGraphJobDesc();
- friend void SaveLoad_LinkGraph(LinkGraph &lg);
+ friend class SlLinkgraphNode;
+ friend class SlLinkgraphEdge;
CargoID cargo; ///< Cargo of this component's link graph.
Date last_compression; ///< Last time the capacities and supplies were compressed.