diff --git a/x/machine/keeper/msg_server_register_trust_anchor.go b/x/machine/keeper/msg_server_register_trust_anchor.go
index b71d6c2..a566fbd 100644
--- a/x/machine/keeper/msg_server_register_trust_anchor.go
+++ b/x/machine/keeper/msg_server_register_trust_anchor.go
@@ -35,6 +35,12 @@ func validatePublicKey(pubkey string) bool {
 		return false
 	}
 
+	//uncompressed key
+	if len(pubkeyBytes) == 64 {
+		return true
+	}
+
+	// compressed key
 	// Check if byte slice has correct length
 	if len(pubkeyBytes) != 33 {
 		return false
diff --git a/x/machine/keeper/msg_server_test.go b/x/machine/keeper/msg_server_test.go
index 73dd467..09a28c1 100644
--- a/x/machine/keeper/msg_server_test.go
+++ b/x/machine/keeper/msg_server_test.go
@@ -71,6 +71,18 @@ func TestMsgServerRegisterTrustAnchor(t *testing.T) {
 	}
 }
 
+func TestMsgServerRegisterTrustAnchorUncompressedKey(t *testing.T) {
+	t.Parallel()
+	pk := "6003d0ab9af4ec112629195a7266a244aecf1ac7691da0084be3e7ceea2ee71571b0963fffd9c80a640317509a681ac66c2ed70ecc9f317a0d2b1a9bff94ff74"
+	ta := moduleobject.TrustAnchor(pk)
+	msg := types.NewMsgRegisterTrustAnchor(pk, &ta)
+	msgServer, ctx := setupMsgServer(t)
+	res, err := msgServer.RegisterTrustAnchor(ctx, msg)
+	if assert.NoError(t, err) {
+		assert.Equal(t, &types.MsgRegisterTrustAnchorResponse{}, res)
+	}
+}
+
 func TestMsgServerRegisterTrustAnchorTwice(t *testing.T) {
 	t.Parallel()
 	_, pk := sample.KeyPair()