diff --git a/kibot/out_report.py b/kibot/out_report.py
index ffd753bb..6bed092a 100644
--- a/kibot/out_report.py
+++ b/kibot/out_report.py
@@ -391,7 +391,7 @@ class ReportOptions(BaseOptions):
                 oar_t = min(oar_x, oar_y)
                 if oar_t:
                     self.oar_pads = min(self.oar_pads, oar_t)
-        self._vias_m = list(sorted(self._vias.keys()))
+        self._vias_m = sorted(self._vias.keys())
         # Via Pad size
         self.via_pad_d = ds.m_ViasMinSize
         self.via_pad = self._vias_m[0][1]