diff --git a/pretix_servicefees/views.py b/pretix_servicefees/views.py
index 5358aa4..304532d 100644
--- a/pretix_servicefees/views.py
+++ b/pretix_servicefees/views.py
@@ -9,9 +9,19 @@ from pretix.control.views.event import EventSettingsViewMixin, EventSettingsForm
 
 class ServiceFeeSettingsForm(SettingsForm):
     service_fee_abs = forms.DecimalField(label=_('Service fee'))
-    service_fee_percent = forms.DecimalField(label=_('Service fee (%)'))
+    service_fee_percent = forms.DecimalField(
+        label=_('Service fee (%)'),
+        help_text=_('Percentage of the order total. Note that this percentage will currently only '
+                    'be calculated on the summed price of sold tickets, not on other fees like e.'
+                    'g. shipping fees, if there are any.')
+    )
     service_fee_abs_resellers = forms.DecimalField(label=_('Service fee with resellers'))
-    service_fee_percent_resellers = forms.DecimalField(label=_('Service fee with resellers (%)'))
+    service_fee_percent_resellers = forms.DecimalField(
+        label=_('Service fee with resellers (%)'),
+        help_text=_('Percentage of the order total. Note that this percentage will currently only '
+                    'be calculated on the summed price of sold tickets, not on other fees like e.'
+                    'g. shipping fees, if there are any.')
+    )
 
 
 class SettingsView(EventSettingsViewMixin, EventSettingsFormView):