diff --git a/src/crystal/event_loop/file_descriptor.cr b/src/crystal/event_loop/file_descriptor.cr
index 75a455a89c9a..633fa180db68 100644
--- a/src/crystal/event_loop/file_descriptor.cr
+++ b/src/crystal/event_loop/file_descriptor.cr
@@ -10,7 +10,7 @@ abstract class Crystal::EventLoop
     abstract def read(file_descriptor : Crystal::System::FileDescriptor, slice : Bytes) : Int32
 
     # Blocks the current fiber until the file descriptor is ready for read.
-    abstract def wait_readable(file_descriptor Crystal::System::FileDescriptor) : Nil
+    abstract def wait_readable(file_descriptor : Crystal::System::FileDescriptor) : Nil
 
     # Writes at least one byte from *slice* to the file descriptor.
     #
@@ -21,7 +21,7 @@ abstract class Crystal::EventLoop
     abstract def write(file_descriptor : Crystal::System::FileDescriptor, slice : Bytes) : Int32
 
     # Blocks the current fiber until the file descriptor is ready for write.
-    abstract def wait_writable(file_descriptor Crystal::System::FileDescriptor) : Nil
+    abstract def wait_writable(file_descriptor : Crystal::System::FileDescriptor) : Nil
 
     # Closes the file descriptor resource.
     abstract def close(file_descriptor : Crystal::System::FileDescriptor) : Nil
diff --git a/src/crystal/event_loop/libevent.cr b/src/crystal/event_loop/libevent.cr
index f57685a41959..636d01331624 100644
--- a/src/crystal/event_loop/libevent.cr
+++ b/src/crystal/event_loop/libevent.cr
@@ -132,6 +132,7 @@ class Crystal::EventLoop::LibEvent < Crystal::EventLoop
     socket.evented_wait_writable do
       raise IO::TimeoutError.new("Write timed out")
     end
+  end
 
   def receive_from(socket : ::Socket, slice : Bytes) : Tuple(Int32, ::Socket::Address)
     sockaddr = Pointer(LibC::SockaddrStorage).malloc.as(LibC::Sockaddr*)