diff --git a/core/libs/tests/GuestNpFriendListDialog.cpp b/core/libs/tests/GuestNpFriendListDialog.cpp
index f06898db7b..7e85ecf4cd 100644
--- a/core/libs/tests/GuestNpFriendListDialog.cpp
+++ b/core/libs/tests/GuestNpFriendListDialog.cpp
@@ -23,8 +23,10 @@ int main() {
     std::int32_t result[2] = {-1, -1};
 
     Require(sceNpFriendListDialogTerminate() == kErrNotInitialized);
+    Require(sceNpFriendListDialogOpenA(nullptr) == kErrNotInitialized);
     Require(sceNpFriendListDialogOpenA(&param) == kErrNotInitialized);
     Require(sceNpFriendListDialogClose() == kErrNotInitialized);
+    Require(sceNpFriendListDialogGetResultA(nullptr) == kErrNotInitialized);
     Require(sceNpFriendListDialogGetResultA(result) == kErrNotInitialized);
     Require(sceNpFriendListDialogGetStatus() == kStatusNone);
     Require(sceNpFriendListDialogUpdateStatus() == kStatusNone);