diff --git a/site.conf b/site.conf
index 96c50c5f938dad7402ac8fc3524ed01e9bc537b1..5912515c90cbeb5d6cdbf01c86ade67ce0937036 100644
--- a/site.conf
+++ b/site.conf
@@ -61,7 +61,6 @@
 			nightly = {
 				name = 'nightly',
 				mirrors = {'http://[fd74:fdaa:9dc4::1]/firmware/nightly' },
-				probability = 1,
 				good_signatures = 1,
 				pubkeys = {
 					'7c224b6b2a12bb6ed9fb93b908fcb52e870d15b00c717bd2809673a014dbfeb1',  -- buildbot
@@ -70,7 +69,6 @@
 			testing = {
 				name = 'testing',
 				mirrors = {'http://[fd74:fdaa:9dc4::1]/firmware/testing' },
-				probability = 0.5,
 				good_signatures = 1,
 				pubkeys = {
 					'22c79b193a36269fd7fd51531e762b776e982926c90822df80b56f2be11648d4', -- bjo
@@ -83,7 +81,6 @@
 			stable = {
 				name = 'stable',
 				mirrors = {'http://[fd74:fdaa:9dc4::1]/firmware/stable' },
-				probability = 0.08, -- mean time until update: ~12.5 hours (1/0.08)
 				good_signatures = 2,
 				pubkeys = {
 					'22c79b193a36269fd7fd51531e762b776e982926c90822df80b56f2be11648d4', --bjo