diff --git a/fs/quota_v2.c b/fs/quota_v2.c
index 19bdb7b..7afcbb1 100644
--- a/fs/quota_v2.c
+++ b/fs/quota_v2.c
@@ -503,7 +503,8 @@
 		int i;
 		ref[GETIDINDEX(dquot->dq_id, depth)] = cpu_to_le32(0);
 		for (i = 0; i < V2_DQBLKSIZE && !buf[i]; i++);	/* Block got empty? */
-		if (i == V2_DQBLKSIZE) {
+		/* Don't put the root block into the free block list */
+		if (i == V2_DQBLKSIZE && *blk != V2_DQTREEOFF) {
 			put_free_dqblk(sb, type, buf, *blk);
 			*blk = 0;
 		}