diff --git a/benches/client.rs b/benches/client.rs
index 59380b56..064c0982 100644
--- a/benches/client.rs
+++ b/benches/client.rs
@@ -90,7 +90,7 @@ fn bench_http(b: &mut test::Bencher) {
         // cant unwrap because Err contains RequestWriter, which does not implement Show
         let mut res = match req.read_response() {
             Ok(res) => res,
-            Err(..) => fail!("http response failed")
+            Err(..) => panic!("http response failed")
         };
         res.read_to_string().unwrap();
     });
diff --git a/benches/client_mock_tcp.rs b/benches/client_mock_tcp.rs
index baae3d70..a9ac828f 100644
--- a/benches/client_mock_tcp.rs
+++ b/benches/client_mock_tcp.rs
@@ -126,7 +126,7 @@ fn bench_mock_http(b: &mut test::Bencher) {
         // cant unwrap because Err contains RequestWriter, which does not implement Show
         let mut res = match req.read_response() {
             Ok(res) => res,
-            Err(..) => fail!("http response failed")
+            Err(..) => panic!("http response failed")
         };
         res.read_to_string().unwrap();
     });
diff --git a/examples/client.rs b/examples/client.rs
index b7869489..8bf8926b 100644
--- a/examples/client.rs
+++ b/examples/client.rs
@@ -22,13 +22,13 @@ fn main() {
             println!("GET {}...", url)
             url
         },
-        Err(e) => fail!("Invalid URL: {}", e)
+        Err(e) => panic!("Invalid URL: {}", e)
     };
 
 
     let req = match Request::get(url) {
         Ok(req) => req,
-        Err(err) => fail!("Failed to connect: {}", err)
+        Err(err) => panic!("Failed to connect: {}", err)
     };
 
     let mut res = req
@@ -39,7 +39,7 @@ fn main() {
     println!("{}", res.headers);
     match copy(&mut res, &mut stdout()) {
         Ok(..) => (),
-        Err(e) => fail!("Stream failure: {}", e)
+        Err(e) => panic!("Stream failure: {}", e)
     };
 
 }