diff --git a/src/mathed/ChangeLog b/src/mathed/ChangeLog
index 835dac6655..4e6aaa2758 100644
--- a/src/mathed/ChangeLog
+++ b/src/mathed/ChangeLog
@@ -1,3 +1,7 @@
+2003-09-02  Alfredo Braunstein  <abraunst@libero.it>
+
+	* formulamacro.C (prefix): replace %s by %1$s to make bformat happy
+
 2003-09-01  Alfredo Braunstein  <abraunst@libero.it>
 
 	* formulabase.C (InsetFormulaBase): initialize view_
diff --git a/src/mathed/formulamacro.C b/src/mathed/formulamacro.C
index 6e0bc6b8ef..a54a0e3642 100644
--- a/src/mathed/formulamacro.C
+++ b/src/mathed/formulamacro.C
@@ -124,7 +124,7 @@ void InsetFormulaMacro::read(std::istream & is)
 
 string InsetFormulaMacro::prefix() const
 {
-	return bformat(_(" Macro: %s: "), getInsetName());
+	return bformat(_(" Macro: %1$s: "), getInsetName());
 }