diff --git a/src/montgomery.rs b/src/montgomery.rs
index d07e6af..da3c9a5 100644
--- a/src/montgomery.rs
+++ b/src/montgomery.rs
@@ -76,6 +76,12 @@ impl ConstantTimeEq for MontgomeryPoint {
     }
 }
 
+impl Default for MontgomeryPoint {
+    fn default() -> MontgomeryPoint {
+        MontgomeryPoint([0u8; 32])
+    }
+}
+
 impl PartialEq for MontgomeryPoint {
     fn eq(&self, other: &MontgomeryPoint) -> bool {
         self.ct_eq(other).unwrap_u8() == 1u8