diff --git a/SC2006.md b/SC2006.md
index d1b077e..450b866 100644
--- a/SC2006.md
+++ b/SC2006.md
@@ -24,7 +24,7 @@ Backtick command substitution `` `...` `` is legacy syntax with several issues.
 
 ### Exceptions
 
-None.
+- Some legacy sh implementations (like Solaris) do not support `$(...)`, it is necessary to use backtick command substitution there. See [\[mc-devel\] \[PATCH\] Prefer $() to backticks in sh script](https://lists.midnight-commander.org/pipermail/mc-devel/2024-November/011241.html) and follow-ups.
 
 ### Related resources: