diff --git a/src/Autopilot/component.hxx b/src/Autopilot/component.hxx
index eb848d663..3f8d60352 100644
--- a/src/Autopilot/component.hxx
+++ b/src/Autopilot/component.hxx
@@ -27,7 +27,6 @@
 #  include <config.h>
 #endif
 
-#include <simgear/props/props.hxx>
 #include <simgear/structure/subsystem_mgr.hxx>
 #include <simgear/props/condition.hxx>
 
diff --git a/src/Autopilot/logic.cxx b/src/Autopilot/logic.cxx
index 1400b6fb8..83270427d 100644
--- a/src/Autopilot/logic.cxx
+++ b/src/Autopilot/logic.cxx
@@ -19,6 +19,14 @@
 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 //
 
+// for some obscure reason, MSVC needs this to compile
+#ifdef _MSC_VER
+#ifndef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+#include <simgear/math/SGMath.hxx>
+#endif
+
 #include "logic.hxx"
 
 using namespace FGXMLAutopilot;