diff --git a/map/forms.py b/map/forms.py
index ac7c551..e6493a7 100644
--- a/map/forms.py
+++ b/map/forms.py
@@ -36,6 +36,7 @@ class LocationSharingForm(forms.ModelForm):
         self.request = request
         self.fields['shares_location_to'].queryset = Friend.objects.exclude(pk=request.user.pk)
         self.fields['shares_location_to'].label = 'Share location to'
+        self.fields['shares_location_to'].help_text = 'Hold <kbd>Ctrl</kbd> or <kbd>Cmd</kbd> to select multiple users'
 
 
 class FriendCreationForm(UserCreationForm):