diff --git a/docs/TODO.md b/docs/TODO.md
index cc13a91b61..7c7c065baf 100644
--- a/docs/TODO.md
+++ b/docs/TODO.md
@@ -1058,3 +1058,11 @@ See [curl issue 12655](https://github.com/curl/curl/issues/12655)
 
 Running test suite with `CURL_DBG_SOCK_WBLOCK=90 ./runtests.pl -a 1200 to
 1300` makes several Gopher test cases fail where they should not.
+
+# Signals
+
+## SIGPIPE
+
+Since we control the IO functions for most protocols and disable
+SIGPIPE on sends, libcurl could skip the special SIGPIPE ignore
+handling for those transfers.