diff --git a/ms2rescore/feature_generators/deeplc.py b/ms2rescore/feature_generators/deeplc.py
index 30bea71..bea210c 100644
--- a/ms2rescore/feature_generators/deeplc.py
+++ b/ms2rescore/feature_generators/deeplc.py
@@ -139,7 +139,7 @@ def add_features(self, psm_list: PSMList) -> None:
 
                 # Disable wild logging to stdout by Tensorflow, unless in debug mode
                 with contextlib.redirect_stdout(
-                    open(os.devnull, "w")
+                    open(os.devnull, "w", encoding="utf-8")
                 ) if not self._verbose else contextlib.nullcontext():
                     # Make new PSM list for this run (chain PSMs per spectrum to flat list)
                     psm_list_run = PSMList(psm_list=list(chain.from_iterable(psms.values())))