diff --git a/passes/opt/opt_lut.cc b/passes/opt/opt_lut.cc
index ba2cc6ee7..be050c713 100644
--- a/passes/opt/opt_lut.cc
+++ b/passes/opt/opt_lut.cc
@@ -58,7 +58,7 @@ struct OptLutWorker
 			}
 		}
 
-		return lut_table.extract(lut_index).as_int();
+		return lut_table.extract(lut_index).as_bool();
 	}
 
 	void show_stats_by_arity()
diff --git a/passes/techmap/lut2mux.cc b/passes/techmap/lut2mux.cc
index d32bbff14..a4ed79550 100644
--- a/passes/techmap/lut2mux.cc
+++ b/passes/techmap/lut2mux.cc
@@ -32,7 +32,7 @@ int lut2mux(Cell *cell)
 
 	if (GetSize(sig_a) == 1)
 	{
-		cell->module->addMuxGate(NEW_ID, lut[0], lut[1], sig_a, sig_y);
+		cell->module->addMuxGate(NEW_ID, lut.extract(0)[0], lut.extract(1)[0], sig_a, sig_y);
 	}
 	else
 	{