diff --git a/sys/arch/powerpc/powerpc/ofw_machdep.c b/sys/arch/powerpc/powerpc/ofw_machdep.c
index f437eb60a41e..7f235d3cc864 100644
--- a/sys/arch/powerpc/powerpc/ofw_machdep.c
+++ b/sys/arch/powerpc/powerpc/ofw_machdep.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: ofw_machdep.c,v 1.6 2000/09/24 15:57:03 tsubai Exp $	*/
+/*	$NetBSD: ofw_machdep.c,v 1.7 2000/12/05 05:16:00 mycroft Exp $	*/
 
 /*
  * Copyright (C) 1996 Wolfgang Solfrank.
@@ -76,12 +76,13 @@ mem_regions(memp, availp)
 
 	/* Remove zero sized entry in the returned data. */
 	cnt /= sizeof OFmem[0];
-	for (i = 0; i < cnt; i++)
+	for (i = 0; i < cnt; )
 		if (OFmem[i].size == 0) {
 			bcopy(&OFmem[i + 1], &OFmem[i],
 			      (cnt - i) * sizeof OFmem[0]);
 			cnt--;
-		}
+		} else
+			i++;
 
 	bzero(OFavail, sizeof OFavail);
 	cnt = OF_getprop(phandle, "available",
@@ -90,12 +91,13 @@ mem_regions(memp, availp)
 		goto error;
 
 	cnt /= sizeof OFavail[0];
-	for (i = 0; i < cnt; i++)
+	for (i = 0; i < cnt; )
 		if (OFavail[i].size == 0) {
 			bcopy(&OFavail[i + 1], &OFavail[i],
 			      (cnt - i) * sizeof OFavail[0]);
 			cnt--;
-		}
+		} else
+			i++;
 
 	*memp = OFmem;
 	*availp = OFavail;