diff --git a/src/bin/pg_resetxlog/pg_resetxlog.c b/src/bin/pg_resetxlog/pg_resetxlog.c
index 3500c4cf1d49a627a3585b193a872c3f16effcec..7e9864dd4d3cdd551c9860eee03feaf6d8072c49 100644
--- a/src/bin/pg_resetxlog/pg_resetxlog.c
+++ b/src/bin/pg_resetxlog/pg_resetxlog.c
@@ -708,7 +708,7 @@ FindEndOfXLOG(void)
 	 * old pg_control.	Note that for the moment we are working with segment
 	 * numbering according to the old xlog seg size.
 	 */
-	segs_per_xlogid = (0x100000000L / ControlFile.xlog_seg_size);
+	segs_per_xlogid = (UINT64CONST(0x0000000100000000) / ControlFile.xlog_seg_size);
 	newXlogSegNo = ControlFile.checkPointCopy.redo / ControlFile.xlog_seg_size;
 
 	/*