diff --git "a/R:\\Temp\\TortoiseGit\\write-5e024bf.002.c" "b/C:\\reactos\\drivers\\filesystems\\btrfs\\write.c"
index 6292d7efb0..0981d94b6b 100644
--- "a/drivers/filesystems/btrfs/write.c"
+++ "b/drivers/filesystems/btrfs/write.c"
@@ -511,6 +511,8 @@ NTSTATUS alloc_chunk(device_extension* Vcb, UINT64 flags, chunk** pc, BOOL full_
         goto end;
     }
 
+    c->devices = NULL;
+
     cisize = sizeof(CHUNK_ITEM) + (num_stripes * sizeof(CHUNK_ITEM_STRIPE));
     c->chunk_item = ExAllocatePoolWithTag(NonPagedPool, cisize, ALLOC_TAG);
     if (!c->chunk_item) {
@@ -549,7 +551,8 @@ NTSTATUS alloc_chunk(device_extension* Vcb, UINT64 flags, chunk** pc, BOOL full_
         stripe_size -= stripe_size % stripe_length;
 
     if (stripe_size == 0) {
-        Status = STATUS_INTERNAL_ERROR;
+        ERR("not enough free space found (stripe_size == 0)\n");
+        Status = STATUS_DISK_FULL;
         goto end;
     }