diff --git a/eclass/calculate-utils-r15.eclass b/eclass/calculate-utils-r15.eclass
index ff6021a4b..c1d3aced3 100644
--- a/eclass/calculate-utils-r15.eclass
+++ b/eclass/calculate-utils-r15.eclass
@@ -18,7 +18,7 @@ inherit distutils-r1 eutils
 EXPORTED_FUNCTIONS="src_compile src_install pkg_preinst"
 
 CALCULATE_URI="ftp://ftp.calculate-linux.org/calculate/source/calculate3"
-MIRROR_URI="http://mirror.yandex.ru/calculate/source/calculate3"
+MIRROR_URI="https://mirror.yandex.ru/calculate/source/calculate3"
 
 # @ECLASS-VARIABLE: CALCULATE_MODULES
 # @DESCRIPTION: