diff --git a/cpp/fetch-indexes.cpp b/cpp/fetch-indexes.cpp
index 4852634..4ca4b12 100644
--- a/cpp/fetch-indexes.cpp
+++ b/cpp/fetch-indexes.cpp
@@ -17,6 +17,7 @@
 
 #include "launchpad.h"
 #include "archive.h"
+#include "build.h"
 #include "distribution.h"
 #include "person.h"
 #include "source.h"