diff --git a/site.conf b/site.conf
index dfa5188..520b433 100644
--- a/site.conf
+++ b/site.conf
@@ -55,7 +55,6 @@
                     'http://update2.infra.fftdf/tdf/stable/sysupgrade',
                     'http://images.freifunk-troisdorf.de/tdf/stable/sysupgrade'
                 },
-                probability = 1.00,
                 good_signatures = 2,
                 pubkeys = {
                     '2647b9fec75e130e153728ee8fad14b24764f23637eb9f3b0a68f2a279a74914',     -- Stefan
@@ -77,7 +76,6 @@
                     'http://update2.infra.fftdf/tdf/beta/sysupgrade',
                     'http://images.freifunk-troisdorf.de/tdf/beta/sysupgrade'
                 },
-                probability = 1.00,
                 good_signatures = 2,
                 pubkeys = {
                     '2647b9fec75e130e153728ee8fad14b24764f23637eb9f3b0a68f2a279a74914',     -- Stefan
@@ -98,7 +96,6 @@
                     'http://update2.infra.fftdf/tdf/experimental/sysupgrade',
                     'http://images.freifunk-troisdorf.de/tdf/experimental/sysupgrade'
                 },
-                probability = 1.00,
                 good_signatures = 2,
                 pubkeys = {
                     '2647b9fec75e130e153728ee8fad14b24764f23637eb9f3b0a68f2a279a74914',     -- Stefan