diff --git a/misc/suppressions/lsan b/misc/suppressions/lsan
index 8d67265369..4592c33981 100644
--- a/misc/suppressions/lsan
+++ b/misc/suppressions/lsan
@@ -12,3 +12,7 @@ leak:FcValueSave
 # This leak happens during GTK initialization. Requires debug symbols for
 # libatk-bridge2.0.
 leak:atk_bridge_adaptor_init
+
+# Leak in a function called from gtk_init_check() when using X RandR extension.
+# Requires debug symbols for libxrandr2.
+leak:doGetScreenResources