diff --git a/nss.gyp b/nss.gyp
index 08f9446..206b4bc 100644
--- a/nss.gyp
+++ b/nss.gyp
@@ -1141,6 +1141,9 @@
               '-Wno-switch',
               # nss has some `unsigned < 0` checks.
               '-Wno-tautological-compare',
+              # nss-urandom-abort.patch removed the only call to
+              # rng_systemFromNoise
+              '-Wno-unused-function',
             ],
           },
           'conditions': [