diff --git a/debian/changelog b/debian/changelog
index ab2d80061b1fdc3bdd39cd140ba1df3b63717ac9..015828548abad32aeea1a7a7f10ab80ab900f33b 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -4,8 +4,9 @@ cl-asdf (2:1.625-1) UNRELEASED; urgency=low
   * Added dh_installinfo for info files. (Closes: #560290)
   * Incorporated run-shell-command patch for LispWorks. Thanks tianchun!
     (Closes: #457919)
+  * Added info that this version breaks clc
 
- -- Peter Van Eynde <pvaneynd@debian.org>  Wed, 24 Feb 2010 21:38:15 +0100
+ -- Peter Van Eynde <pvaneynd@debian.org>  Wed, 24 Feb 2010 21:48:14 +0100
 
 cl-asdf (2:1.502-1) unstable; urgency=low
 
diff --git a/debian/control b/debian/control
index 2fc26a78c155d22ca2a2150efe7028cc7536d85a..8f218d0e18e7704d01b7c78971a9f0d51c7695e3 100644
--- a/debian/control
+++ b/debian/control
@@ -13,7 +13,8 @@ Package: cl-asdf
 Architecture: all
 Recommends: common-lisp-controller, sbcl | lisp-compiler
 Replaces: sbcl-common (<= 1:0.9.13.0-2)
-Conflicts: sbcl-common (<= 1:0.9.13.0-2), common-lisp-controller (<< 6.13)
+Conflicts: sbcl-common (<= 1:0.9.13.0-2), common-lisp-controller (>> 7.0)
+Breaks: common-lisp-controller (<= 7.0)
 Depends: ${misc:Depends}
 Description: Another System Definition Facility
  asdf provides a "make" type functions for Common Lisp packages. It