diff --git a/src/main/java/icu/samnyan/aqua/sega/util/jackson/BasicMapper.kt b/src/main/java/icu/samnyan/aqua/sega/util/jackson/BasicMapper.kt
index 71d6cf54..216aea0a 100644
--- a/src/main/java/icu/samnyan/aqua/sega/util/jackson/BasicMapper.kt
+++ b/src/main/java/icu/samnyan/aqua/sega/util/jackson/BasicMapper.kt
@@ -77,7 +77,9 @@ var STRING_MAPPER = jacksonObjectMapper().apply {
 @Component
 class StringMapper: IMapper(STRING_MAPPER)
 
-class A {
+
+// Testing code
+private class A {
     var cat = ""
 }