diff --git a/Code/common/src/validator_set.rs b/Code/common/src/validator_set.rs
index dcd8210e1..cd58f1698 100644
--- a/Code/common/src/validator_set.rs
+++ b/Code/common/src/validator_set.rs
@@ -12,7 +12,6 @@ pub trait PublicKey
 where
     Self: Clone + Debug + PartialEq + Eq,
 {
-    fn hash(&self) -> u64; // FIXME: Make the hash type generic
 }
 
 /// Defines the requirements for an address.
diff --git a/Code/test/src/validator_set.rs b/Code/test/src/validator_set.rs
index bf7f88f5b..e50b9a781 100644
--- a/Code/test/src/validator_set.rs
+++ b/Code/test/src/validator_set.rs
@@ -17,11 +17,7 @@ impl PublicKey {
     }
 }
 
-impl malachite_common::PublicKey for PublicKey {
-    fn hash(&self) -> u64 {
-        self.hash()
-    }
-}
+impl malachite_common::PublicKey for PublicKey {}
 
 #[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
 pub struct Address(u64);