diff --git a/glibc-2.X-drd.supp b/glibc-2.X-drd.supp
index ab486293a..10d80b47d 100644
--- a/glibc-2.X-drd.supp
+++ b/glibc-2.X-drd.supp
@@ -303,6 +303,16 @@
    obj:/usr/lib*/libgomp.so*
    obj:/usr/lib*/libgomp.so*
 }
+{
+   libX11-XListFontsWithInfo
+   exp-drd:CondErr
+   fun:pthread_cond_init*
+   fun:_XReply
+   fun:XListFontsWithInfo
+   obj:/usr/lib*/libX11.so*
+   fun:XCreateOC
+   fun:XCreateFontSet
+}
 {
    libxcb-xcb_wait_for_reply
    exp-drd:CondErr