diff --git a/sdk/include/ndk/pstypes.h b/sdk/include/ndk/pstypes.h
index 543afcb618d..219b880368f 100644
--- a/sdk/include/ndk/pstypes.h
+++ b/sdk/include/ndk/pstypes.h
@@ -902,7 +902,7 @@ typedef struct _PROCESS_SESSION_INFORMATION
 
 #endif
 
-typedef struct _PROCESS_PRIORITY_CLASS
+typedef struct DECLSPEC_ALIGN(4) _PROCESS_PRIORITY_CLASS
 {
     BOOLEAN Foreground;
     UCHAR PriorityClass;