diff --git a/src/corelib/io/qstorageinfo_win.cpp b/src/corelib/io/qstorageinfo_win.cpp
index 8840813171a..3582612508c 100644
--- a/src/corelib/io/qstorageinfo_win.cpp
+++ b/src/corelib/io/qstorageinfo_win.cpp
@@ -13,7 +13,7 @@
 
 #include "qntdll_p.h"
 
-extern "C" NTSTATUS NTSYSCALLAPI NtQueryVolumeInformationFile(HANDLE, PIO_STATUS_BLOCK, PVOID, ULONG,
+extern "C" NTSTATUS NTSYSCALLAPI NTAPI NtQueryVolumeInformationFile(HANDLE, PIO_STATUS_BLOCK, PVOID, ULONG,
     FS_INFORMATION_CLASS);
 
 QT_BEGIN_NAMESPACE
diff --git a/src/corelib/kernel/qwinregistry.cpp b/src/corelib/kernel/qwinregistry.cpp
index 2bd1518e5be..303bae7136e 100644
--- a/src/corelib/kernel/qwinregistry.cpp
+++ b/src/corelib/kernel/qwinregistry.cpp
@@ -15,7 +15,7 @@
 
 // User mode version of ZwQueryKey, as per:
 // https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/wdm/nf-wdm-zwquerykey
-extern "C" NTSTATUS NTSYSCALLAPI NtQueryKey(HANDLE KeyHandle, int KeyInformationClass,
+extern "C" NTSTATUS NTSYSCALLAPI NTAPI NtQueryKey(HANDLE KeyHandle, int KeyInformationClass,
     PVOID KeyInformation, ULONG Length, PULONG ResultLength);
 
 QT_BEGIN_NAMESPACE