diff --git a/simgear/misc/sg_path.cxx b/simgear/misc/sg_path.cxx
index 72c2d745..cecbdd5d 100644
--- a/simgear/misc/sg_path.cxx
+++ b/simgear/misc/sg_path.cxx
@@ -23,6 +23,8 @@
 // $Id$
 
 
+#include <simgear_config.h>
+
 #include "sg_path.hxx"