diff --git a/types/pubkey.go b/types/pubkey.go
deleted file mode 100644
index e5cd5fbf3..000000000
--- a/types/pubkey.go
+++ /dev/null
@@ -1,16 +0,0 @@
-package types
-
-const (
-	PubKeyEd25519 = "ed25519"
-)
-
-func Ed25519Validator(pubkey []byte, power int64) Validator {
-	return Validator{
-		// Address:
-		PubKey: PubKey{
-			Type: PubKeyEd25519,
-			Data: pubkey,
-		},
-		Power: power,
-	}
-}
diff --git a/types/util.go b/types/validator.go
similarity index 85%
rename from types/util.go
rename to types/validator.go
index 0924ab5ff..e443a3361 100644
--- a/types/util.go
+++ b/types/validator.go
@@ -8,6 +8,21 @@ import (
 	cmn "github.com/tendermint/tmlibs/common"
 )
 
+const (
+	PubKeyEd25519 = "ed25519"
+)
+
+func Ed25519Validator(pubkey []byte, power int64) Validator {
+	return Validator{
+		// Address:
+		PubKey: PubKey{
+			Type: PubKeyEd25519,
+			Data: pubkey,
+		},
+		Power: power,
+	}
+}
+
 //------------------------------------------------------------------------------
 
 // Validators is a list of validators that implements the Sort interface