diff --git a/dll/win32/kernel32/client/proc.c b/dll/win32/kernel32/client/proc.c
index cba4cf6a1e..23f2cd80ad 100644
--- a/dll/win32/kernel32/client/proc.c
+++ b/dll/win32/kernel32/client/proc.c
@@ -1659,10 +1659,24 @@ WINAPI
 GetPriorityClass(IN HANDLE hProcess)
 {
     NTSTATUS Status;
-    PROCESS_PRIORITY_CLASS PriorityClass;
+    PROCESS_PRIORITY_CLASS DECLSPEC_ALIGN(4) PriorityClass;
+    HANDLE newProcess;
+
+    if (hProcess == (HANDLE)-1) /* Check for pseudo handle */
+    {
+        /* Convert a pseudo handle to a real handle.
+           MSDN says: A process can use the OpenProcess
+           function to open a real handle to itself. */
+        newProcess = OpenProcess( PROCESS_DUP_HANDLE, 0, (DWORD)hProcess );
+    }
+    else
+    {
+        /* If it is not a pseudo handle, then just use the incoming handle. */
+        newProcess = hProcess;
+    }
 
     /* Query the kernel */
-    Status = NtQueryInformationProcess(hProcess,
+    Status = NtQueryInformationProcess(newProcess,
                                        ProcessPriorityClass,
                                        &PriorityClass,
                                        sizeof(PriorityClass),
@@ -1696,7 +1710,7 @@ SetPriorityClass(IN HANDLE hProcess,
 {
     NTSTATUS Status;
     PVOID State = NULL;
-    PROCESS_PRIORITY_CLASS PriorityClass;
+    PROCESS_PRIORITY_CLASS DECLSPEC_ALIGN(4) PriorityClass;
 
     /* Handle conversion from Win32 to NT priority classes */
     switch (dwPriorityClass)
@@ -2270,7 +2284,7 @@ CreateProcessInternalW(IN HANDLE hUserToken,
     HANDLE DebugHandle, TokenHandle, JobHandle, KeyHandle, ThreadHandle;
     HANDLE FileHandle, SectionHandle, ProcessHandle;
     ULONG ResumeCount;
-    PROCESS_PRIORITY_CLASS PriorityClass;
+    PROCESS_PRIORITY_CLASS DECLSPEC_ALIGN(4) PriorityClass;
     NTSTATUS Status, AppCompatStatus, SaferStatus, IFEOStatus, ImageDbgStatus;
     PPEB Peb, RemotePeb;
     PTEB Teb;