diff --git a/soitool/inline_editable_soi_view.py b/soitool/inline_editable_soi_view.py
index b5647c880d553eccfd73fc60778a75fd2fccd57d..4758b5c2e7846cef8483f17032f4bea10a882c81 100644
--- a/soitool/inline_editable_soi_view.py
+++ b/soitool/inline_editable_soi_view.py
@@ -103,7 +103,7 @@ class InlineEditableSOIView(QScrollArea):
         Raises
         ------
         ValueError
-            I filename is invalid
+            If filename is invalid.
         """
         printer = QPrinter(QPrinter.HighResolution)
         printer.setOutputFormat(QPrinter.PdfFormat)