diff --git a/network/web/firefox/files/mozconfig b/network/web/firefox/files/mozconfig
index f1a1441afb..0bea07a7d1 100755
--- a/network/web/firefox/files/mozconfig
+++ b/network/web/firefox/files/mozconfig
@@ -36,7 +36,7 @@ ac_add_options --disable-crashreporter
 
 # New MP4, etc
 #ac_add_options --disable-rust
-#ac_add_options --enable-rust-simd
+ac_add_options --enable-rust-simd
 
 
 ac_add_options --with-google-api-keyfile="%%PWD%%/%%FILE%%"