diff --git a/edc_qareports/modeladmin_mixins/on_study_missing_values_modeladmin_mixin.py b/edc_qareports/modeladmin_mixins/on_study_missing_values_modeladmin_mixin.py
index 20c297f..3b0e8b5 100644
--- a/edc_qareports/modeladmin_mixins/on_study_missing_values_modeladmin_mixin.py
+++ b/edc_qareports/modeladmin_mixins/on_study_missing_values_modeladmin_mixin.py
@@ -50,7 +50,10 @@ def dashboard(self, obj=None, label=None) -> str:
                 f"{self.project_subject_admin}:{obj.label_lower.replace('.', '_')}_change",
                 args=(obj.original_id,),
             )
-            url = f"{url}?next={self.project_reports_admin}:{self.model._meta.label_lower.replace('.', '_')}_changelist"
+            url = (
+                f"{url}?next={self.project_reports_admin}:"
+                f"{self.model._meta.label_lower.replace('.', '_')}_changelist"
+            )
         context = dict(title=_("Go to CRF"), url=url, label=label)
         return render_to_string("dashboard_button.html", context=context)