diff --git a/src/libstd/io/process.rs b/src/libstd/io/process.rs
index 3babef6126e8f..529fd25dc50e9 100644
--- a/src/libstd/io/process.rs
+++ b/src/libstd/io/process.rs
@@ -140,6 +140,7 @@ pub struct ProcessConfig<'a> {
 }
 
 /// The output of a finished process.
+#[deriving(Eq, TotalEq, Clone)]
 pub struct ProcessOutput {
     /// The status (exit code) of the process.
     pub status: ProcessExit,