diff --git a/Rakefile b/Rakefile
index c562136..34e997b 100644
--- a/Rakefile
+++ b/Rakefile
@@ -7,7 +7,7 @@ require "execjs/runtimes"
 
 tests = namespace :test do |tests|
   ExecJS::Runtimes.names.each do |name|
-    next if (name == :Disabled || name == "Disabled")
+    next if name.to_s == "Disabled"
 
     task(name.downcase) do
       ENV["EXECJS_RUNTIME"] = name.to_s