diff --git a/src/Instrumentation/instrument_mgr.hxx b/src/Instrumentation/instrument_mgr.hxx
index 68a229404..f040e26c2 100644
--- a/src/Instrumentation/instrument_mgr.hxx
+++ b/src/Instrumentation/instrument_mgr.hxx
@@ -19,10 +19,6 @@
 
 #include <Main/fgfs.hxx>
 
-#include <vector>
-
-SG_USING_STD(vector);
-
 
 /**
  * Manage aircraft instruments.