1 files changed, 4 insertions, 4 deletions
diff --git a/win32/win32.c b/win32/win32.c
index 32b468f15c..d28050f3e6 100644
--- a/win32/win32.c
+++ b/win32/win32.c
@@ -4711,10 +4711,10 @@ rb_w32_getppid(void)
 	    struct {
 		long ExitStatus;
 		void* PebBaseAddress;
-		ULONG AffinityMask;
-		ULONG BasePriority;
-		ULONG UniqueProcessId;
-		ULONG ParentProcessId;
+		uintptr_t AffinityMask;
+		uintptr_t BasePriority;
+		uintptr_t UniqueProcessId;
+		uintptr_t ParentProcessId;
 	    } pbi;
 	    ULONG len;
 	    long ret = pNtQueryInformationProcess(GetCurrentProcess(), 0, &pbi, sizeof(pbi), &len);