diff --git a/simgear/scene/tsync/terrasync.cxx b/simgear/scene/tsync/terrasync.cxx
index 6b03ddfe..8622fce7 100644
--- a/simgear/scene/tsync/terrasync.cxx
+++ b/simgear/scene/tsync/terrasync.cxx
@@ -51,6 +51,7 @@
 #include <map>
 
 #include <simgear/compiler.h>
+#include <simgear/version.h>
 
 #include "terrasync.hxx"