Drop obsolete include

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

diff --git a/src/Instrumentation/turn_indicator.cxx b/src/Instrumentation/turn_indicator.cxx
index 973b4054aad99d6f46df5edf915ace15cf5f8536..25df4de4e71f6f5d67bdb4213d03ea506db8068c 100644 (file)
--- a/src/Instrumentation/turn_indicator.cxx
+++ b/src/Instrumentation/turn_indicator.cxx
@@ -12,6 +12,7 @@
 #include <Main/fg_props.hxx>
 #include <Main/util.hxx>
 
+using std::string;
 
 // Use a bigger number to be more responsive, or a smaller number
 // to be more sluggish.