diff -r 3c886fe611b8 -r f738e6dbd844 CONTRIBUTORS
--- a/CONTRIBUTORS	Sat Mar 23 17:11:06 2013 +0100
+++ b/CONTRIBUTORS	Sat Mar 23 20:50:39 2013 +0100
@@ -7,6 +7,9 @@
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 * March 2013: Florian Haftmann, TUM
+  Reform of "big operators" on sets.
+
+* March 2013: Florian Haftmann, TUM
   Algebraic locale hierarchy for orderings and (semi)lattices.
 
 * Feb. 2013: Florian Haftmann, TUM