diff --git a/src/Cockpit/hud.hxx b/src/Cockpit/hud.hxx
index 079139e29..4b5006070 100644
--- a/src/Cockpit/hud.hxx
+++ b/src/Cockpit/hud.hxx
@@ -57,6 +57,8 @@
 
 FG_USING_STD(deque);
 FG_USING_STD(vector);
+FG_USING_NAMESPACE(std);
+
 
 #ifndef WIN32
   typedef struct {
diff --git a/src/GUI/gui.cxx b/src/GUI/gui.cxx
index 164ec1a53..4ccceb468 100644
--- a/src/GUI/gui.cxx
+++ b/src/GUI/gui.cxx
@@ -65,6 +65,10 @@
 
 FG_USING_STD(string);
 
+#ifndef FG_HAVE_NATIVE_SGI_COMPILERS
+FG_USING_STD(cout);
+#endif
+
 puFont guiFnt = 0;
 fntTexFont *guiFntHandle = 0;