1 files changed, 2 insertions, 2 deletions
diff --git a/src/libcore/fmt/num.rs b/src/libcore/fmt/num.rs
index e57c4999483..22d8ba63b20 100644
--- a/src/libcore/fmt/num.rs
+++ b/src/libcore/fmt/num.rs
@@ -92,7 +92,7 @@ macro_rules! radix {
             fn digit(&self, x: u8) -> u8 {
                 match x {
                     $($x => $conv,)+
-                    x => fail!("number not in the range 0..{}: {}", self.base() - 1, x),
+                    x => panic!("number not in the range 0..{}: {}", self.base() - 1, x),
                 }
             }
         }
@@ -126,7 +126,7 @@ impl GenericRadix for Radix {
         match x {
             x @  0 ... 9 => b'0' + x,
             x if x < self.base() => b'a' + (x - 10),
-            x => fail!("number not in the range 0..{}: {}", self.base() - 1, x),
+            x => panic!("number not in the range 0..{}: {}", self.base() - 1, x),
         }
     }
 }