diff --git a/reader_test.go b/reader_test.go
index a0909c0..6dd3042 100644
--- a/reader_test.go
+++ b/reader_test.go
@@ -226,6 +226,7 @@ type NestedPointerMapX struct {
 
 type PointerMap struct {
 	MapX struct {
+		Ignored string
 		NestedMapX
 		*NestedPointerMapX
 	} `maxminddb:"mapX"`