diff --git a/aleksis/apps/alsijil/preferences.py b/aleksis/apps/alsijil/preferences.py
index 010c1a6961053e2c5510bf83182a0e8cc30f5a09..fb831301e4bae0138026271ecff80581d72cfb81 100644
--- a/aleksis/apps/alsijil/preferences.py
+++ b/aleksis/apps/alsijil/preferences.py
@@ -46,6 +46,14 @@ class CarryOverDataToNextPeriods(BooleanPreference):
     help_text = _("This will carry over data only if the data in the following periods are empty.")
 
 
+@site_preferences_registry.register
+class CarryOverPersonalNotesToNextPeriods(BooleanPreference):
+    section = alsijil
+    name = "carry_over_personal_notes"
+    default = True
+    verbose_name = _("Carry over personal notes to all following lesson periods on the same day.")
+
+
 @site_preferences_registry.register
 class AllowOpenPeriodsOnSameDay(BooleanPreference):
     section = alsijil
diff --git a/aleksis/apps/alsijil/templates/alsijil/class_register/week_view.html b/aleksis/apps/alsijil/templates/alsijil/class_register/week_view.html
index 0f55e11eaeffe87ca49564074b10cbbae1acc398..021f227eb261ed757200b485660ee0cd9f23b5c5 100644
--- a/aleksis/apps/alsijil/templates/alsijil/class_register/week_view.html
+++ b/aleksis/apps/alsijil/templates/alsijil/class_register/week_view.html
@@ -75,7 +75,7 @@
       <div class="col s12" id="week-overview">
         {% regroup lesson_periods by period.get_weekday_display as periods_by_day %}
         {% for weekday, periods in periods_by_day %}
-          {% with weekdays|get_dict:forloop.counter0 as advanced_weekday %}
+          {% with weekdays|get_dict:periods.0.period.weekday as advanced_weekday %}
             {% weekday_to_date week periods.0.period.weekday as current_date %}
 
             {% if advanced_weekday.holiday and not request.site.preferences.alsijil__allow_entries_in_holidays %}
diff --git a/aleksis/apps/alsijil/views.py b/aleksis/apps/alsijil/views.py
index 24da1a73817d4fcf1d49bbb9360497a2decadb47..6519310b0657924e08aa94ab971acc7f5373d91a 100644
--- a/aleksis/apps/alsijil/views.py
+++ b/aleksis/apps/alsijil/views.py
@@ -169,17 +169,19 @@ def lesson(
                         reversion.set_user(request.user)
                         instances = personal_note_formset.save()
 
-                    # Iterate over personal notes and carry changed absences to following lessons
-                    with reversion.create_revision():
-                        reversion.set_user(request.user)
-                        for instance in instances:
-                            instance.person.mark_absent(
-                                wanted_week[lesson_period.period.weekday],
-                                lesson_period.period.period + 1,
-                                instance.absent,
-                                instance.excused,
-                                instance.excuse_type,
-                            )
+                    if get_site_preferences()["alsijil__carry_over_personal_notes"]:
+                        # Iterate over personal notes
+                        # and carry changed absences to following lessons
+                        with reversion.create_revision():
+                            reversion.set_user(request.user)
+                            for instance in instances:
+                                instance.person.mark_absent(
+                                    wanted_week[lesson_period.period.weekday],
+                                    lesson_period.period.period + 1,
+                                    instance.absent,
+                                    instance.excused,
+                                    instance.excuse_type,
+                                )
 
                 messages.success(request, _("The personal notes have been saved."))