diff --git a/src/files.cpp b/src/files.cpp
index d1b7c05..6f322ec 100644
--- a/src/files.cpp
+++ b/src/files.cpp
@@ -79,7 +79,7 @@ bool mrbesen::files::iterateFile(std::istream& file, fileLineCallback clb, bool
 
 template<class Container>
 bool mrbesen::files::scan(const std::string& path, std::insert_iterator<Container> it, bool prefixdir, fileNameFilter fnf) {
-	return scan(path, [&](const std::string& p, FileType t){ it = p; }, prefixdir, fnf);
+	return scan(path, [&](const std::string& p, [[maybe_unused]] FileType t){ it = p; }, prefixdir, fnf);
 }
 
 //curently only these are supported, because iterators may break on others upon insertion