diff --git a/changes/ce/fix-11987.en.md b/changes/ce/fix-11987.en.md
new file mode 100644
index 000000000..4d85cff41
--- /dev/null
+++ b/changes/ce/fix-11987.en.md
@@ -0,0 +1,3 @@
+Fix connection crash when trying to set TCP/SSL socket `active_n` option.
+
+Prior to this fix, if a socket is already closed when connection process tries to set `active_n` option, it causes a `case_clause` crash.