diff --git a/nx/include/switch/nacp.h b/nx/include/switch/nacp.h
index d50506f2..a7308bce 100644
--- a/nx/include/switch/nacp.h
+++ b/nx/include/switch/nacp.h
@@ -27,7 +27,7 @@ typedef struct {
     u8 dataLossConfirmation;
     u8 playLogPolicy;
     u64 presenceGroupId;
-    char ratingAge[0x20];
+    s8 ratingAge[0x20];
     char version[0x10];
     u64 addOnContentBaseId;
     u64 saveDataOwnerId;