add to project files

[flightgear.git] / src / Instrumentation / slip_skid_ball.cxx

diff --git a/src/Instrumentation/slip_skid_ball.cxx b/src/Instrumentation/slip_skid_ball.cxx
index 4925e1fa94ca7b363c96295af9871ea410c1c41d..2ee3bb12c0cfba29e787ef73dc3621ff67fae998 100644 (file)
--- a/src/Instrumentation/slip_skid_ball.cxx
+++ b/src/Instrumentation/slip_skid_ball.cxx
@@ -7,6 +7,7 @@
 #include <Main/fg_props.hxx>
 #include <Main/util.hxx>
 
+using std::string;
 
 SlipSkidBall::SlipSkidBall ( SGPropertyNode *node)
     :