diff --git a/src/base.rs b/src/base.rs
index b7e5546..83b020b 100644
--- a/src/base.rs
+++ b/src/base.rs
@@ -25,7 +25,7 @@ impl CFIndexConvertible for uint {
     fn to_CFIndex(self) -> CFIndex {
         let max_CFIndex: CFIndex = Bounded::max_value();
         if self > (max_CFIndex as uint) {
-            fail!("value out of range")
+            panic!("value out of range")
         }
         self as CFIndex
     }
diff --git a/src/dictionary.rs b/src/dictionary.rs
index 104d67b..dc85e11 100644
--- a/src/dictionary.rs
+++ b/src/dictionary.rs
@@ -147,7 +147,7 @@ impl CFDictionary {
     pub fn get(&self, key: *const c_void) -> *const c_void {
         let value = self.find(key);
         if value.is_none() {
-            fail!("No entry found for key: {}", key);
+            panic!("No entry found for key: {}", key);
         }
         value.unwrap()
     }