diff --git a/src/field.rs b/src/field.rs
index 2f1301f..5b7885f 100644
--- a/src/field.rs
+++ b/src/field.rs
@@ -179,49 +179,7 @@ impl FieldElement {
         FieldElement([ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 ])
     }
 
-    /// Overwrite this FieldElement with one of the inputs without branching.
-    /// Like `conditional_assign`, but chooses between two inputs instead of
-    /// one input and the original value.
-    ///
-    /// If `choice == 0`, replace `self` with `f`:
-    ///
-    /// ```
-    /// # use curve25519_dalek::field::FieldElement;
-    /// let f     = FieldElement([1,1,1,1,1,1,1,1,1,1]);
-    /// let g     = FieldElement([2,2,2,2,2,2,2,2,2,2]);
-    /// let mut h = FieldElement([0,0,0,0,0,0,0,0,0,0]);
-    /// h.conditional_choose(&f, &g, 0);
-    /// assert!(h == f);
-    /// ```
-    ///
-    /// If `choice == 1`, replace `self` with `g`:
-    ///
-    /// ```
-    /// # use curve25519_dalek::field::FieldElement;
-    /// # let f     = FieldElement([1,1,1,1,1,1,1,1,1,1]);
-    /// # let g     = FieldElement([2,2,2,2,2,2,2,2,2,2]);
-    /// # let mut h = FieldElement([0,0,0,0,0,0,0,0,0,0]);
-    /// h.conditional_choose(&f, &g, 1);
-    /// assert!(h == g);
-    /// ```
-    ///
-    /// # Preconditions
-    ///
-    /// * `b` in {0,1}
-    pub fn conditional_choose(&mut self,
-                              f: &FieldElement,
-                              g: &FieldElement,
-                              choice: u8)
-    {
-        let mask = -(choice as Limb);
-        for i in 0..10 {
-            self[i] = f[i] ^ (mask & (f[i] ^ g[i]));
-        }
-    }
-
-    /// Conditionally assign the Limbs of another FieldElement to this
-    /// one.  Like `conditional_choose`, but choosing between one
-    /// input and the original value.
+    /// Conditionally assign another FieldElement to this one.
     ///
     /// If `choice == 0`, replace `self` with `self`:
     ///