diff --git a/lib/alchemy/routing_constraints.rb b/lib/alchemy/routing_constraints.rb
index 9de3fdf521..ffe6b9681b 100644
--- a/lib/alchemy/routing_constraints.rb
+++ b/lib/alchemy/routing_constraints.rb
@@ -27,7 +27,7 @@ def matches?(request)
     # because it could be a legacy route that needs to be redirected.
     #
     def handable_format?
-      @request.format.symbol.nil? || (@request.format.symbol == :html)
+      @request.format.symbol.nil? || @request.format.html?
     end
 
     # We don't want to handle the Rails info routes.
diff --git a/spec/routing/routing_spec.rb b/spec/routing/routing_spec.rb
index 36c6f1aac8..47aebbfca0 100644
--- a/spec/routing/routing_spec.rb
+++ b/spec/routing/routing_spec.rb
@@ -194,6 +194,14 @@
     end
   end
 
+  describe "Turbo stream requests" do
+    it do
+      expect({
+        get: "/contact/thanks.turbo_stream"
+      }).to be_routable
+    end
+  end
+
   context "for admin interface" do
     context "default" do
       it "should route to admin dashboard" do