diff --git a/src/mathed/ChangeLog b/src/mathed/ChangeLog
index c78cb12571..bcfc2a10a2 100644
--- a/src/mathed/ChangeLog
+++ b/src/mathed/ChangeLog
@@ -1,3 +1,12 @@
+2001-04-25  Angus Leeming  <a.leeming@ic.ac.uk>
+
+	* array.h (operator<<):
+	* math_macro.h (dump, operator<<): added std:: qualifier to ostream.
+
+	* math_macrotable.C: added using std::make_pair directive.
+	(dump): added using std::cerr directive here as I guess that this is
+	temporary.
+
 2001-04-20  Allan Rae  <rae@lyx.org>
 
 	* formula.C (LocalDispatch): fixed another #warning.  Guess who.
diff --git a/src/mathed/array.h b/src/mathed/array.h
index 79f89e6721..e0583eba58 100644
--- a/src/mathed/array.h
+++ b/src/mathed/array.h
@@ -145,7 +145,7 @@ private:
 };
 
 inline 
-ostream & operator<<(ostream & os, MathedArray const & ar)
+std::ostream & operator<<(std::ostream & os, MathedArray const & ar)
 {
 	ar.dump(os);
 	return os;
diff --git a/src/mathed/math_macro.h b/src/mathed/math_macro.h
index 45fc2c91e9..6ca04d335b 100644
--- a/src/mathed/math_macro.h
+++ b/src/mathed/math_macro.h
@@ -76,7 +76,7 @@ public:
 	///
 	void expand();
 	///
-	void dump(ostream & os) const;
+	void dump(std::ostream & os) const;
 	///
 	MathParInset const * arg(int) const;
 	///
@@ -97,7 +97,7 @@ private:
 	void operator=(MathMacro const &);
 };
 
-inline ostream & operator<<(ostream & os, MathMacro const & m)
+inline std::ostream & operator<<(std::ostream & os, MathMacro const & m)
 {
 	m.dump(os);
 	return os;
diff --git a/src/mathed/math_macrotable.C b/src/mathed/math_macrotable.C
index c5ab680d39..dfbb59c606 100644
--- a/src/mathed/math_macrotable.C
+++ b/src/mathed/math_macrotable.C
@@ -17,6 +17,7 @@
 #include "support/LAssert.h"
 
 using std::endl;
+using std::make_pair;
 
 MathMacroTable::table_type MathMacroTable::macro_table;
 
@@ -25,6 +26,8 @@ bool MathMacroTable::built = false;
 
 void MathMacroTable::dump()
 {
+	using std::cerr;
+
 	cerr << "\n------------------------------------------\n";
 	table_type::const_iterator it;
 	for (it = macro_table.begin(); it != macro_table.end(); ++it)