diff --git a/build/sanitizers/lsan_suppressions.txt b/build/sanitizers/lsan_suppressions.txt
index 7e87f5831b9..f551b2d8c0c 100644
--- a/build/sanitizers/lsan_suppressions.txt
+++ b/build/sanitizers/lsan_suppressions.txt
@@ -33,6 +33,9 @@ leak:GI___strdup
 
 # WebRTC leaks added for Mochitest 2.
 leak:NR_reg_init
+# nr_reg_local_init should be redundant with NR_reg_init, but with 34 on Aurora
+# we get less stack frames for some reason.
+leak:nr_reg_local_init
 leak:fsmdef_init
 leak:r_log_register
 leak:nr_reg_set