diff --git a/build/moz.configure/toolchain.configure b/build/moz.configure/toolchain.configure
index 923e231448c4..7a00a4f437ca 100755
--- a/build/moz.configure/toolchain.configure
+++ b/build/moz.configure/toolchain.configure
@@ -1471,6 +1471,7 @@ def ubsan(options):
         'integer-divide-by-zero',
         'object-size',
         'pointer-overflow',
+        'return',
         'vla-bound',
     ]