diff --git a/BUGS.org b/BUGS.org
index 46fcb4ece21d8df1307f0850c5f0326e77f833a3..7132a71a463442cb8ed34a70f281b634ffb617c7 100644
--- a/BUGS.org
+++ b/BUGS.org
@@ -74,6 +74,11 @@
   I'm not sure what else that does.
 * RESOLVED #20 closing the connection causes infinite R errors    :IMPORTANT:
   reported by "Philipp Marek" <philipp@marek.priv.at> by private mail.
+* OPEN #21 inspecting an environment causes error in match()          :MINOR:
+  reported by "Philipp Marek" <philipp@marek.priv.at> by private mail.
+
+  To reproduce, C-c I globalenv() RET, or hit RET on environment
+  presentations in the debugger (if presentations are on).
 * COMMENT:
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