diff --git a/Utilities/cmlibuv/src/win/winapi.h b/Utilities/cmlibuv/src/win/winapi.h
index 16d9365cc..341fcd084 100644
--- a/Utilities/cmlibuv/src/win/winapi.h
+++ b/Utilities/cmlibuv/src/win/winapi.h
@@ -4145,7 +4145,7 @@ typedef const UNICODE_STRING *PCUNICODE_STRING;
       struct {
         UCHAR  DataBuffer[1];
       } GenericReparseBuffer;
-    } DUMMYUNIONNAME;
+    };
   } REPARSE_DATA_BUFFER, *PREPARSE_DATA_BUFFER;
 #endif
 
@@ -4153,7 +4153,7 @@ typedef struct _IO_STATUS_BLOCK {
   union {
     NTSTATUS Status;
     PVOID Pointer;
-  } DUMMYUNIONNAME;
+  };
   ULONG_PTR Information;
 } IO_STATUS_BLOCK, *PIO_STATUS_BLOCK;