diff --git a/google/internal/externalaccount/sts_exchange.go b/google/internal/externalaccount/sts_exchange.go
index 1bcd661..7571a0b 100644
--- a/google/internal/externalaccount/sts_exchange.go
+++ b/google/internal/externalaccount/sts_exchange.go
@@ -63,7 +63,6 @@ func ExchangeToken(ctx context.Context, endpoint string, request *STSTokenExchan
 
 	}
 
-
 	return &stsResp, nil
 }
 
diff --git a/google/internal/externalaccount/sts_exchange_test.go b/google/internal/externalaccount/sts_exchange_test.go
index 496bba6..1cd05e7 100644
--- a/google/internal/externalaccount/sts_exchange_test.go
+++ b/google/internal/externalaccount/sts_exchange_test.go
@@ -81,8 +81,8 @@ func TestExchangeToken(t *testing.T) {
 		t.Fatalf("ExchangeToken failed with error: %v", err)
 	}
 
-	if diff := cmp.Diff(expectedToken, *resp); diff != "" {
-		t.Errorf("mismatched messages received by mock server (-want +got): \n%v", diff)
+	if expectedToken != *resp {
+		t.Errorf("mismatched messages received by mock server.  \nWant: \n%v\n\nGot:\n%v", expectedToken, *resp)
 	}
 
 }