X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=simgear%2Fmath%2Fsg_types.hxx;h=f413c26b58359eb66f13f00c6773132562e2bffd;hb=dfea3623f6549c9173fed5149da41285863fc290;hp=e629a55a8539938986aa44bbf394ab9298d4d505;hpb=733e6fa14ff507a1022ecab8d55cc9bf587bee40;p=simgear.git

diff --git a/simgear/math/sg_types.hxx b/simgear/math/sg_types.hxx
index e629a55a..f413c26b 100644
--- a/simgear/math/sg_types.hxx
+++ b/simgear/math/sg_types.hxx
@@ -38,10 +38,10 @@
 #include <string>
 #include <vector>
 
-#include <simgear/math/point3d.hxx>
+class Point3D;
 
-SG_USING_STD(vector);
-SG_USING_STD(string);
+using std::vector;
+using std::string;
 
 /** STL vector list of ints */
 typedef vector < int > int_list;