diff --git a/debian/changelog b/debian/changelog
index 87a6523dd..270e5dbf4 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -7,6 +7,7 @@ linux (4.2~rc6-1~exp1) UNRELEASED; urgency=medium
     - Update .gitignore files
     - debian/control: Update Vcs-* fields
     - README.Debian, README.source: Update references to svn
+  * [rt] Disable until it is updated for 4.2 or later
 
  -- Ben Hutchings <ben@decadent.org.uk>  Tue, 04 Aug 2015 01:47:47 +0100
 
diff --git a/debian/config/defines b/debian/config/defines
index 9adc1c52b..cf6d73f6f 100644
--- a/debian/config/defines
+++ b/debian/config/defines
@@ -33,7 +33,7 @@ featuresets:
  rt
 
 [featureset-rt_base]
-enabled: true
+enabled: false
 
 [description]
 part-long-up: This kernel is not suitable for SMP (multi-processor,