1 files changed, 5 insertions, 7 deletions
diff --git a/prelude.rb b/prelude.rb
index 423c9c423e..6451b8f74a 100644
--- a/prelude.rb
+++ b/prelude.rb
@@ -2,13 +2,11 @@
 # Mutex
 
 class Mutex
-  class Mutex
-    def synchronize
-      self.lock
-      yield
-    ensure
-      self.unlock
-    end
+  def synchronize
+    self.lock
+    yield
+  ensure
+    self.unlock
   end
 end