2 files changed, 2 insertions, 0 deletions
diff --git a/src/libstd/io/native/file.rs b/src/libstd/io/native/file.rs
index 5e39460ba6a..c157efa7d38 100644
--- a/src/libstd/io/native/file.rs
+++ b/src/libstd/io/native/file.rs
@@ -167,6 +167,7 @@ impl rtio::RtioTTY for FileDesc {
     fn get_winsize(&mut self) -> Result<(int, int), IoError> {
         Err(super::unimpl())
     }
+    fn isatty(&self) -> bool { false }
 }
 
 impl Drop for FileDesc {
diff --git a/src/libstd/rt/rtio.rs b/src/libstd/rt/rtio.rs
index 35fb8baa6ce..775f9d6c3be 100644
--- a/src/libstd/rt/rtio.rs
+++ b/src/libstd/rt/rtio.rs
@@ -230,6 +230,7 @@ pub trait RtioTTY {
     fn write(&mut self, buf: &[u8]) -> Result<(), IoError>;
     fn set_raw(&mut self, raw: bool) -> Result<(), IoError>;
     fn get_winsize(&mut self) -> Result<(int, int), IoError>;
+    fn isatty(&self) -> bool;
 }
 
 pub trait PausibleIdleCallback {