diff --git a/relayer/relayer.go b/relayer/relayer.go
index 4005359..e8a5e0b 100644
--- a/relayer/relayer.go
+++ b/relayer/relayer.go
@@ -35,7 +35,7 @@ var (
 
 // Provider interface representing provider functions necessary for Relayer Package
 type Provider interface {
-	RelayWithCtx(ctx context.Context, rpcURL string, input *provider.RelayInput, options *provider.RelayRequestOptions) (*provider.RelayOutput, error)
+	RelayWithCtx(ctx context.Context, rpcURL string, input *provider.RelayInput, options *provider.RelayRequestOptions) (*provider.RelayOutput, *provider.RelayOutputErr)
 }
 
 // Signer interface representing signer functions necessary for Relayer Package
diff --git a/relayer/relayer_test.go b/relayer/relayer_test.go
index b0f4da7..70fa519 100644
--- a/relayer/relayer_test.go
+++ b/relayer/relayer_test.go
@@ -79,7 +79,7 @@ func TestRelayer_Relay(t *testing.T) {
 	mock.AddMockedResponseFromFile(http.MethodPost, fmt.Sprintf("%s%s", "https://dummy.com", provider.ClientRelayRoute),
 		http.StatusBadRequest, "../provider/samples/client_relay_error.json")
 
-	var error *provider.RelayError
+	var error error
 
 	relay, err = relayer.Relay(input, nil)
 	c.ErrorAs(err, &error)
@@ -164,7 +164,7 @@ func TestRelayer_RelayWithCtx(t *testing.T) {
 	mock.AddMockedResponseFromFile(http.MethodPost, fmt.Sprintf("%s%s", "https://dummy.com", provider.ClientRelayRoute),
 		http.StatusBadRequest, "../provider/samples/client_relay_error.json")
 
-	var error *provider.RelayError
+	var error error
 
 	relay, err = relayer.RelayWithCtx(context.Background(), input, nil)
 	c.ErrorAs(err, &error)