diff --git a/libdazzle.spec b/libdazzle.spec
index 930ba7a..71a3779 100644
--- a/libdazzle.spec
+++ b/libdazzle.spec
@@ -55,7 +55,7 @@ developing applications that use %{name}.
 
 
 %check
-dbus-run-session -- xvfb-run ninja test %{__ninja_common_opts} -C %{_vpath_builddir}
+dbus-run-session -- xvfb-run -w 10 ninja test %{__ninja_common_opts} -C %{_vpath_builddir}
 
 
 %post -p /sbin/ldconfig