diff --git a/src/Sound/fg_fx.cxx b/src/Sound/fg_fx.cxx
index e21a0c2aa..7054e358e 100644
--- a/src/Sound/fg_fx.cxx
+++ b/src/Sound/fg_fx.cxx
@@ -25,6 +25,10 @@
 #pragma warning (disable: 4786)
 #endif
 
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
 #include <simgear/debug/logstream.hxx>
 #include <simgear/structure/exception.hxx>
 #ifdef __BORLANDC__
diff --git a/src/Sound/fg_fx.hxx b/src/Sound/fg_fx.hxx
index 08d690c88..61aee36ec 100644
--- a/src/Sound/fg_fx.hxx
+++ b/src/Sound/fg_fx.hxx
@@ -24,10 +24,6 @@
 #ifndef __FGFX_HXX
 #define __FGFX_HXX 1
 
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
 #include <simgear/compiler.h>
 
 #include <queue>