# \#lfe-user

**URL:** https://erlangforums.com/tag/lfe-user/355.md

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## [Problem with LFE macro](https://erlangforums.com/t/problem-with-lfe-macro/1039)

<div class="topic-metadata">

**Author:** [@mdbergmann](https://erlangforums.com/u/mdbergmann)\
**Replies:** 4\
**Last updated:** [February 7, 2022, 6:29pm UTC](https://erlangforums.com/t/problem-with-lfe-macro/1039 "2022-02-07T18:29:40Z")

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Hello. I’m having a problem with macro expansion. This is my macro: lfe\> (defmacro foo (body) \`(progn ,@body)) lfe\> (foo (io:format "hello~n")) \*\* exception error: symbol io:format is unbound Now wh…