diff --git a/libguestfs.changes b/libguestfs.changes
index c25cf30..d1de9df 100644
--- a/libguestfs.changes
+++ b/libguestfs.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Thu Nov 29 20:25:33 CET 2012 - ohering@suse.de
+
+- update BuildRequire ext4-writeable-kmp-default handling
+  enable it unconditional in sles11 builds, but not in the
+  Virtualization repo because its a private package.
+
 -------------------------------------------------------------------
 Thu Nov 29 20:15:11 CET 2012 - ohering@suse.de
 
diff --git a/libguestfs.spec b/libguestfs.spec
index 55ef527..6b31182 100644
--- a/libguestfs.spec
+++ b/libguestfs.spec
@@ -281,9 +281,18 @@ BuildRequires:  cryptsetup
 BuildRequires:  diffutils
 BuildRequires:  dosfstools
 BuildRequires:  e2fsprogs
-%if "%_project" == "Devel:Virt:SLE-11-SP3"
+# ext4 in the sles11 kernel-binary.rpm packages operates only in read-only mode.
+# The generated initrd operates inside the temporary guest on image files.
+# For that reason it needs to make modifications to any kind of filesystems.
+# Make use of an ext4 driver with write support. But:
+# This package exists only in the internal buildservice, so require it only there.
+%if %suse_version == 1110
+%if "%_project" == "Virtualization"
+# package does not exist in OBS main repo
+%else
 BuildRequires:  ext4-writeable-kmp-default
 %endif
+%endif
 BuildRequires:  file
 BuildRequires:  findutils
 BuildRequires:  gawk