X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FEnvironment%2Fridge_lift.hxx;h=642683c06141e0bcebf2e7ef818437c24fd1b469;hb=59f6f330c219b71e9abee07ee7587a303e65ed91;hp=a5e97d62083a56379b005e48be394dfbd0bdaf1b;hpb=93cc7e0e5b82de3e98cff7946fd564ed28940111;p=flightgear.git

diff --git a/src/Environment/ridge_lift.hxx b/src/Environment/ridge_lift.hxx
index a5e97d620..642683c06 100644
--- a/src/Environment/ridge_lift.hxx
+++ b/src/Environment/ridge_lift.hxx
@@ -36,6 +36,7 @@
 #include <string>
 using std::string;
 
+#include <simgear/props/tiedpropertylist.hxx>
 
 class FGRidgeLift : public SGSubsystem {
 public:
@@ -80,6 +81,7 @@ private:
 	SGPropertyNode_ptr _user_latitude_node;
 	SGPropertyNode_ptr _ground_elev_node;
 
+	simgear::TiedPropertyList _tiedProperties;
 };
 
 #endif  // _FG_RidgeLift_HXX