diff --git a/debian/changelog b/debian/changelog
index 16689447c..4e727f404 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -3,6 +3,9 @@ linux (4.3.1-1~exp1) UNRELEASED; urgency=medium
   * New upstream stable update:
     https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.1
 
+  [ Ben Hutchings ]
+  * Set ABI to 1
+
  -- Ben Hutchings <ben@decadent.org.uk>  Wed, 09 Dec 2015 23:20:32 +0000
 
 linux (4.3-1~exp2) experimental; urgency=medium
diff --git a/debian/config/defines b/debian/config/defines
index b7abd466c..8194a2f01 100644
--- a/debian/config/defines
+++ b/debian/config/defines
@@ -1,5 +1,5 @@
 [abi]
-abiname: trunk
+abiname: 1
 
 [base]
 arches: