diff --git a/skrub/_reporting/_table_report.py b/skrub/_reporting/_table_report.py
index 2842dda81..aa933655a 100644
--- a/skrub/_reporting/_table_report.py
+++ b/skrub/_reporting/_table_report.py
@@ -226,7 +226,7 @@ def write_html(self, file):
         if (encoding := getattr(file, "encoding", None)) is not None:
             try:
                 encoding_name = codecs.lookup(encoding).name
-            except LookupError:
+            except LookupError:  # pragma: no cover
                 encoding_name = None
             if encoding_name != "utf-8":
                 raise ValueError(