diff --git a/BUILD.gn b/BUILD.gn
index 8ec41f2..959d8ac 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -45,6 +45,7 @@
       "-std=gnu99",
       # yasm does not comply with -Wimplicit-fallthrough, so disable it.
       "-Wno-implicit-fallthrough",
+      "-Wno-unused-but-set-variable",
     ]
     configs = [ "//build/config:Wno-conversion" ]
   }