diff --git a/simgear/scene/tgdb/TileEntry.cxx b/simgear/scene/tgdb/TileEntry.cxx
index 64f9c3e0..3442d39f 100644
--- a/simgear/scene/tgdb/TileEntry.cxx
+++ b/simgear/scene/tgdb/TileEntry.cxx
@@ -45,7 +45,6 @@
 
 #include <simgear/bucket/newbucket.hxx>
 #include <simgear/debug/logstream.hxx>
-#include <simgear/math/polar3d.hxx>
 #include <simgear/math/sg_geodesy.hxx>
 #include <simgear/math/sg_random.h>
 #include <simgear/math/SGMath.hxx>