diff --git a/gnome-shell.changes b/gnome-shell.changes
index a88c2fd..e99b884 100644
--- a/gnome-shell.changes
+++ b/gnome-shell.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Tue Feb 15 09:59:51 CET 2011 - vuntz@opensuse.org
+
+- Fix build: BUILD_AGAINST_GNOME3 is not necessarily defined, so
+  use %{?BUILD_AGAINST_GNOME3}.
+
 -------------------------------------------------------------------
 Sun Feb 13 16:16:33 CET 2011 - vuntz@opensuse.org
 
diff --git a/gnome-shell.spec b/gnome-shell.spec
index f5dbde7..969fc99 100644
--- a/gnome-shell.spec
+++ b/gnome-shell.spec
@@ -57,7 +57,7 @@ Requires:       gdk-pixbuf-loader-rsvg
 Requires:       gjs
 Requires:       gnome-icon-theme-symbolic
 Requires:       gnome-session
-%if 0%BUILD_AGAINST_GNOME3
+%if 0%{?BUILD_AGAINST_GNOME3}
 # For a GSettings schema
 Requires:       gnome-settings-daemon
 %endif
@@ -79,7 +79,7 @@ documents, and organizing open windows in GNOME.
 %lang_package
 %prep
 %setup -q
-%if ! 0%BUILD_AGAINST_GNOME3
+%if ! 0%{?BUILD_AGAINST_GNOME3}
 %patch0 -p1
 %endif