diff --git a/contrib/pg_upgrade/exec.c b/contrib/pg_upgrade/exec.c
index ddf16d2497e31d83cf04969fb9a41f1bd74a849c..c991a8d033f863b2bbf45018692524f478b37f63 100644
--- a/contrib/pg_upgrade/exec.c
+++ b/contrib/pg_upgrade/exec.c
@@ -102,7 +102,7 @@ static DWORD       mainThreadId = 0;
 
 		for (iter = 0; iter < 4 && log == NULL; iter++)
 		{
-			sleep(1);
+			pg_usleep(1000000);		/* 1 sec */
 			log = fopen(log_file, "a");
 		}
 	}
diff --git a/contrib/pg_upgrade/pg_upgrade.h b/contrib/pg_upgrade/pg_upgrade.h
index 389ec936d04858d1dfdb62be9e741e0d3bffcdbf..14039b4d3dea11f1797fca65c87ce7222e0ad2c4 100644
--- a/contrib/pg_upgrade/pg_upgrade.h
+++ b/contrib/pg_upgrade/pg_upgrade.h
@@ -83,7 +83,6 @@ extern char *output_files[];
 #define pg_copy_file		CopyFile
 #define pg_mv_file			pgrename
 #define pg_link_file		win32_pghardlink
-#define sleep(x)			Sleep(x * 1000)
 #define PATH_SEPARATOR		'\\'
 #define RM_CMD				"DEL /q"
 #define RMDIR_CMD			"RMDIR /s/q"