diff --git a/src/linkgraph/linkgraph_gui.h b/src/linkgraph/linkgraph_gui.h
--- a/src/linkgraph/linkgraph_gui.h
+++ b/src/linkgraph/linkgraph_gui.h
@@ -21,7 +21,7 @@
  * Only the cargo type of the most saturated linkgraph is taken into account.
  */
 struct LinkProperties {
-	LinkProperties() : cargo(CT_INVALID), capacity(0), usage(0), planned(0), shared(false) {}
+	LinkProperties() : cargo(INVALID_CARGO), capacity(0), usage(0), planned(0), shared(false) {}
 
 	/** Return the usage of the link to display. */
 	uint Usage() const { return std::max(this->usage, this->planned); }