diff --git a/src/os_vms.c b/src/os_vms.c
index 6fd05d5..ff3bf2c 100644
--- a/src/os_vms.c
+++ b/src/os_vms.c
@@ -317,7 +317,7 @@
     function = (IO$_READLBLK | IO$M_EXTEND);
     memset(inbuf, 0, nbytes);
 
-    while (1)
+    for (;;)
     {
 	status = sys$qiow(0, iochan, function, &iosb, 0, 0, inbuf, nbytes - 1,
 					       0, 0, &itmlst, sizeof(itmlst));