diff --git a/src/libstd/io/cursor.rs b/src/libstd/io/cursor.rs
index 87e5a2a448855..faff7a132f624 100644
--- a/src/libstd/io/cursor.rs
+++ b/src/libstd/io/cursor.rs
@@ -16,6 +16,7 @@ use io::{self, SeekFrom, Error, ErrorKind};
 use iter::repeat;
 use num::Int;
 use slice;
+use fmt;
 
 /// A `Cursor` is a type which wraps another I/O object to provide a `Seek`
 /// implementation.
@@ -67,6 +68,13 @@ impl<T> Cursor<T> {
     pub fn set_position(&mut self, pos: u64) { self.pos = pos; }
 }
 
+impl<T> fmt::Debug for Cursor<T> where T: fmt::Debug {
+    fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
+        write!(fmt, "Cursor {{ cursor: {} }}",
+               self.pos)
+    }
+}
+
 macro_rules! seek {
     () => {
         fn seek(&mut self, style: SeekFrom) -> io::Result<u64> {