diff --git a/core/libs/tests/GuestAudio3dParameters.cpp b/core/libs/tests/GuestAudio3dParameters.cpp
index 232c2e1065..41583e675d 100644
--- a/core/libs/tests/GuestAudio3dParameters.cpp
+++ b/core/libs/tests/GuestAudio3dParameters.cpp
@@ -98,5 +98,8 @@ int main() {
     CheckInvalidDestination();
     CheckShortBuffer();
     CheckExtendedBuffer();
+    Require(sceAudio3dTerminate() == static_cast<int>(0x80EA0007), "terminate before initialize reports not ready");
+    Require(sceAudio3dInitialize(1) == static_cast<int>(0x80EA0004), "positive reserved parameter rejected in sceAudio3dInitialize");
+    Require(sceAudio3dInitialize(42) == static_cast<int>(0x80EA0004), "positive reserved parameter rejected in sceAudio3dInitialize");
     Require(sceAudio3dInitialize(-1) == static_cast<int>(0x80EA0004), "non-zero reserved parameter rejected in sceAudio3dInitialize");
 }