diff --git a/BUGS b/BUGS
index 25cdb5082..cd1df448e 100644
--- a/BUGS
+++ b/BUGS
@@ -344,5 +344,12 @@ Thomas Wawrzinek sez:
 > To avoid such behavior, would it be sensible to have guile indicate
 > a wrong usage error or something?
 
+
+bug 13 -- (expt 0 0) -> 0
+reported-by: rlb / 2001-03-21
+fixed: not-yet
+
+According to R5RS (expt 0 0) -> 1
+
 
 [BUGS ends here]