1 files changed, 1 insertions, 1 deletions
diff --git a/ecp5/cells.cc b/ecp5/cells.cc
index 7f9f1579..edc80329 100644
--- a/ecp5/cells.cc
+++ b/ecp5/cells.cc
@@ -422,7 +422,7 @@ void dram_to_ram_slice(Context *ctx, CellInfo *ram, CellInfo *lc, CellInfo *ramw
 }
 
 void nxio_to_tr(Context *ctx, CellInfo *nxio, CellInfo *trio, std::vector<std::unique_ptr<CellInfo>> &created_cells,
-                std::unordered_set<IdString> &todelete_cells)
+                pool<IdString> &todelete_cells)
 {
     if (nxio->type == ctx->id("$nextpnr_ibuf")) {
         trio->params[ctx->id("DIR")] = std::string("INPUT");