diff --git a/src/selection.cc b/src/selection.cc
index 232b6f6a..3b8f3d6f 100644
--- a/src/selection.cc
+++ b/src/selection.cc
@@ -547,7 +547,6 @@ String selection_to_string(const Selection& selection)
 
 String selection_list_to_string(const SelectionList& selections)
 {
-    const auto& buffer = selections.buffer();
     return join(transformed(selections, [](const Selection& s)
                             { return selection_to_string(s); }),
                 ':', false);