diff --git a/gramps/plugins/lib/libgedcom.py b/gramps/plugins/lib/libgedcom.py
index 9e3f4a18c..c07f1cad8 100644
--- a/gramps/plugins/lib/libgedcom.py
+++ b/gramps/plugins/lib/libgedcom.py
@@ -6745,7 +6745,7 @@ class GedcomParser(UpdateCallback):
             WarningDialog(
                _("Import of GEDCOM file %(filename)s with DEST=%(by)s, "
                  "could cause errors in the resulting database!")
-                   % {'filename': fname, 'by': self.genby),
+                   % {'filename': fname, 'by': self.genby},
                _("Look for nameless events.")
                )