--- a/browser/config/mozconfigs/linux64/domstreams
+++ b/browser/config/mozconfigs/linux64/domstreams
@@ -1,7 +1,6 @@
 . "$topsrcdir/browser/config/mozconfigs/linux64/common-opt"
 
-# Keep JS Streams working until we are ready to remove it from the tree.
-ac_add_options --disable-dom-streams
+ac_add_options --enable-dom-streams
 ac_add_options --enable-debug
 
 . "$topsrcdir/build/mozconfig.common.override"

--- a/taskcluster/ci/build/linux.yml
+++ b/taskcluster/ci/build/linux.yml
@@ -1840,17 +1840,17 @@ linux64-gcp/opt:
             - linux64-dump_syms
             - linux64-sccache
             - linux64-nasm
             - linux64-node
             - sysroot-x86_64-linux-gnu
             - sysroot-wasm32-wasi
 
 linux64-domstreams/debug:
-    description: "Linux64 Debug - DOM Streams disabled"
+    description: "Linux64 Debug - DOM Streams enabled"
     index:
         product: firefox
         job-name: linux64-domstreams-debug
     treeherder:
         platform: linux64/debug
         symbol: B-ds
     worker-type: b-linux
     worker:

--- a/toolkit/moz.configure
+++ b/toolkit/moz.configure
@@ -2603,18 +2603,18 @@ wine = check_prog(
     ["wine64", "wine"],
     when=want_wine,
     bootstrap="wine/bin",
 )
 
 # DOM Streams
 # ==============================================================
 option(
-    "--disable-dom-streams",
-    help="Disable DOM Streams (use JS Streams)",
+    "--enable-dom-streams",
+    help="Enable the DOM Streams prototype",
 )
 
 set_config("MOZ_DOM_STREAMS", True, when="--enable-dom-streams")
 set_define("MOZ_DOM_STREAMS", True, when="--enable-dom-streams")
 
 # libevent
 # ==============================================================
 with only_when(compile_environment):