diff --git a/SpywareFilter/sections/tracking_servers.txt b/SpywareFilter/sections/tracking_servers.txt
index 9a9a5640534..c01b56b9971 100644
--- a/SpywareFilter/sections/tracking_servers.txt
+++ b/SpywareFilter/sections/tracking_servers.txt
@@ -159,7 +159,6 @@
 ||tgtag.io^$third-party
 ||track.gaconnector.com^
 ||trafico.prensaiberica.es^
-||collector-*.px-cloud.net^
 ||ediemidnightzombies.com^
 ||deqik.com^
 ||meowlytics.bignutty.xyz^
@@ -542,7 +541,6 @@
 ||lndata.com^$third-party
 ||quietyellowday.com^$third-party
 ||client.botchk.net^
-||b.px-cdn.net^
 ||wurfl.io^$third-party
 ||t.trsbf.com^
 ||t.powerreviews.com^$third-party
@@ -941,8 +939,6 @@
 ||usesfathom.com^$third-party
 ||fathomdns.com^$third-party
 ||tracking.atreemo.com^
-||collector-*.pxchk.net^$third-party
-||collector-*.px-cdn.net^$third-party
 ||thrtle.com^$third-party
 ||imhd.io^$third-party
 ||atom-log.3.cn^$third-party