diff --git a/seminar/models.py b/seminar/models.py
index 1aaafa58..8f83e8b7 100644
--- a/seminar/models.py
+++ b/seminar/models.py
@@ -643,7 +643,7 @@ class Cislo(SeminarModelBase):
 
 	def posli_cislo_mailem(self):
 		# parametry e-mailu
-		odkaz = str(get_current_site(None)) + '/' + self.verejne_url()
+		odkaz = "https://" + str(get_current_site(None)) + self.verejne_url()
 
 		poslat_z_mailu = 'zadani@mam.mff.cuni.cz'
 		predmet = 'Vyšlo číslo {}'.format(self.kod())