diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 3395c3438..26d6a1447 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,9 @@
+Tue Jan 30  8:55:00 2001  Corinna Vinschen <corinna@vinschen.de>
+
+	* pinfo.cc (pinfo::init): Use INVALID_HANDLE_VALUE instead of
+	explicit cast (HANDLE) 0xffffffff.
+	* shared.cc (open_shared): Ditto.
+
 Mon Jan 29 17:15:22 2001  Bill Hegardt <bill@troyxcd.com>
 
 	* fhandler_serial.cc (raw_write): Use local copy of OVERLAPPED
diff --git a/winsup/cygwin/pinfo.cc b/winsup/cygwin/pinfo.cc
index f9b045710..85214407d 100644
--- a/winsup/cygwin/pinfo.cc
+++ b/winsup/cygwin/pinfo.cc
@@ -166,8 +166,8 @@ pinfo::init (pid_t n, DWORD flag, HANDLE in_h)
 	}
       else
 	{
-	  h = CreateFileMapping ((HANDLE) 0xffffffff, &sec_all_nih,
-				  PAGE_READWRITE, 0, mapsize, mapname);
+	  h = CreateFileMapping (INVALID_HANDLE_VALUE, &sec_all_nih,
+				 PAGE_READWRITE, 0, mapsize, mapname);
 	  created = h && GetLastError () != ERROR_ALREADY_EXISTS;
 	}
 
diff --git a/winsup/cygwin/shared.cc b/winsup/cygwin/shared.cc
index 43c4893ef..3c99e2518 100644
--- a/winsup/cygwin/shared.cc
+++ b/winsup/cygwin/shared.cc
@@ -66,7 +66,7 @@ open_shared (const char *name, HANDLE &shared_h, DWORD size, void *addr)
 				       TRUE, mapname);
 	}
       if (!shared_h &&
-	  !(shared_h = CreateFileMappingA ((HANDLE) 0xffffffff,
+	  !(shared_h = CreateFileMappingA (INVALID_HANDLE_VALUE,
 					   &sec_all,
 					   PAGE_READWRITE,
 					   0,