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diff --git a/bezout.tex b/bezout.tex
index 6d4b145..b78f23d 100644
--- a/bezout.tex
+++ b/bezout.tex
@@ -441,6 +441,7 @@ threshold level, where the system develops a mid-spectrum gap, will play a
 crucial role as it does in the real case.
 
 \begin{acknowledgments}
+We wish to thank Alexander Altland for a useful suggestion.
   JK-D and JK are supported by the Simons Foundation Grant No.~454943.
 \end{acknowledgments}