diff --git a/src/ATC/AIMgr.cxx b/src/ATC/AIMgr.cxx
index d2cff20f0..9eba82b1f 100644
--- a/src/ATC/AIMgr.cxx
+++ b/src/ATC/AIMgr.cxx
@@ -40,7 +40,7 @@
 #include "ATCutils.hxx"
 
 SG_USING_STD(list);
-
+SG_USING_STD(cout);
 
 FGAIMgr::FGAIMgr() {
 	ATC = globals->get_ATC_mgr();